1425

1425 is the natural number that comes after 1424 and before 1426. In mathematics, it is an odd composite number with prime factorization 3 × 5^2 × 19. It is divisible by 3, 5, 15, 19, 25, 75, 95, 285, 475, and 1425. In various numeral systems, 1425 is written as MCDXXV in Roman numerals, 0x591 in hexadecimal, and 10110010001 in binary.

Historically, the year 1425 CE is notable as the beginning of the Xuande era in the Ming dynasty of China. The Yongle Emperor died in 1424, and Zhu Zhanji ascended to the throne in 1425 as the Xuande Emperor, reigning until 1435. The Xuande era is remembered for the stabilization of the Ming court and for porcelain production that is now highly regarded as Xuande ware.

In other contexts, 1425 may appear as a designation in calendars, catalogs, or model numbers. While it is primarily recognized as a year in East Asian history, the number itself is a common reference point in mathematics and numeral notation, illustrating how a simple integer can intersect with historical chronology and cultural artifacts.