diff --git a/src/slimit/tests/test_ecmavisitor.py b/src/slimit/tests/test_ecmavisitor.py
index 65dfce2..be85178 100644
--- a/src/slimit/tests/test_ecmavisitor.py
+++ b/src/slimit/tests/test_ecmavisitor.py
@@ -500,6 +500,15 @@ def setUp(self):
           }
         };
         """,
+         # function call on immediate number
+        '(0x25).toString();', 
+        '(1e3).toString();',
+        '(25).toString();',
+
+        # attribute access on immediate number
+        '(25).attr;',
+        '25["attr"];',
+        '0["attr"];',
         ]
 
 
diff --git a/src/slimit/tests/test_minifier.py b/src/slimit/tests/test_minifier.py
index e999335..95536d4 100644
--- a/src/slimit/tests/test_minifier.py
+++ b/src/slimit/tests/test_minifier.py
@@ -398,6 +398,17 @@ def assertMinified(self, source, expected):
          """,
          "(function($){$.hello='world';}(jQuery));"),
 
+        # function call on immediate number
+        ('(0x25).toString()', '0x25.toString();'),
+        ('(1e3).toString()', '1e3.toString();'),
+        ('((25)).toString()', '(25).toString();'),
+        ('((25))["toString"]()', '(25).toString();'),
+
+        # attribute access on immediate number
+        ('((25)).attr', '(25).attr;'),
+        ('((25))["attr"]', '(25).attr;'),
+        ('((0))["attr"]', '(0).attr;'),
+
         # function call in FOR init
         ('for(o(); i < 3; i++) {}', 'for(o();i<3;i++){}'),
 
diff --git a/src/slimit/visitors/ecmavisitor.py b/src/slimit/visitors/ecmavisitor.py
index 1c98598..cc52ce2 100644
--- a/src/slimit/visitors/ecmavisitor.py
+++ b/src/slimit/visitors/ecmavisitor.py
@@ -352,6 +352,8 @@ def visit_NewExpr(self, node):
     def visit_DotAccessor(self, node):
         if getattr(node, '_parens', False):
             template = '(%s.%s)'
+        elif isinstance(node.node, ast.Number):
+            template = '(%s).%s'
         else:
             template = '%s.%s'
         s = template % (self.visit(node.node), self.visit(node.identifier))
diff --git a/src/slimit/visitors/minvisitor.py b/src/slimit/visitors/minvisitor.py
index 1c6fd15..b7250d0 100644
--- a/src/slimit/visitors/minvisitor.py
+++ b/src/slimit/visitors/minvisitor.py
@@ -30,6 +30,9 @@
 from slimit.lexer import Lexer
 
 _HAS_ID_MATCH = re.compile('^%s$' % Lexer.identifier).match
+# Matches all immediate numbers, which are dot accessable (expects a number as input)
+_DOT_ACCESSABLE_NUMBER = re.compile('^(0.+|.+[eE].+|.+\..+)$')
+
 
 def _is_identifier(value):
     return _HAS_ID_MATCH(value) and value not in Lexer.keywords_dict
@@ -386,6 +389,8 @@ def visit_NewExpr(self, node):
     def visit_DotAccessor(self, node):
         if getattr(node, '_parens', False):
             template = '(%s.%s)'
+        elif isinstance(node.node, ast.Number) and not _DOT_ACCESSABLE_NUMBER.match(node.node.value):
+            template = '(%s).%s'
         else:
             template = '%s.%s'
         s = template % (self.visit(node.node), self.visit(node.identifier))
@@ -400,7 +405,10 @@ def visit_BracketAccessor(self, node):
             elif value.startswith('"'):
                 value = value.strip('"')
             if _is_identifier(value):
-                s = '%s.%s' % (self.visit(node.node), value)
+                left = self.visit(node.node)
+                if isinstance(node.node, ast.Number) and not _DOT_ACCESSABLE_NUMBER.match(node.node.value):
+                    left = '(%s)' % left
+                s = '%s.%s' % (left, value)
                 return s
 
         s = '%s[%s]' % (self.visit(node.node), self.visit(node.expr))
@@ -434,4 +442,3 @@ def visit_Array(self, node):
 
     def visit_This(self, node):
         return 'this'
-