2 Kings 14:1-20
In the second year of Joash son of Jehoahaz king of Israel reigned Amaziah the son of Joash king of Judah.
Torrey's Topical Textbook—AKJV

2 Chronicles 25:1-28
Amaziah was twenty and five years old when he began to reign, and he reigned twenty and nine years in Jerusalem. And his mother's name was Jehoaddan of Jerusalem.
Torrey's Topical Textbook—AKJV