diff --git a/ets2panda/lexer/scripts/keywords.yaml b/ets2panda/lexer/scripts/keywords.yaml
index 08ae6869c9a8bf14d83b52ab027894a69cad3149..35b0d135c0613d2ed6a1c01086e36413bfeec373 100644
--- a/ets2panda/lexer/scripts/keywords.yaml
+++ b/ets2panda/lexer/scripts/keywords.yaml
@@ -397,11 +397,10 @@ keywords:
     keyword_like: [ets, ts]
     flags: [definable_type_name, predefined_type]
 
-  # issue 25066
-  # - name: 'Number'
-  #   token: KEYW_BUILTIN_NUMBER
-  #   keyword_like: [ets]
-  #   flags:  [predefined_type]
+  - name: 'Number'
+    token: KEYW_BUILTIN_NUMBER
+    keyword_like: [ets]
+    flags:  [predefined_type]
 
   - name: 'object'
     token: KEYW_OBJECT
diff --git a/ets2panda/scripts/arkui.properties b/ets2panda/scripts/arkui.properties
index 988315ac844212dc404e07e6a3a0eb49321bf673..773b5a1d13f73883313650fa5da6650532b7d2b2 100644
--- a/ets2panda/scripts/arkui.properties
+++ b/ets2panda/scripts/arkui.properties
@@ -1,3 +1,3 @@
 ARKUI_DEV_REPO=https://gitee.com/rri_opensource/koala_projects.git
-ARKUI_DEV_BRANCH=panda_rev_10-suggestion-rebuild
+ARKUI_DEV_BRANCH=panda_rev_10-predefined-number
 ARKUI_DEST=koala-sig
diff --git a/ets2panda/test/ast/parser/ets/number_as_identifier.ets b/ets2panda/test/ast/parser/ets/number_as_identifier.ets
new file mode 100644
index 0000000000000000000000000000000000000000..6421a43e5bf1a539da9d1926e00b7c916617d2e3
--- /dev/null
+++ b/ets2panda/test/ast/parser/ets/number_as_identifier.ets
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2024-2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+enum foo {
+   Number = 2
+}
+
+/* @@? 17:4 Error SyntaxError: Number is a predefined type, cannot be used as an identifier */