25th century

Millennium:	3rd millennium
Centuries:	24th century 25th century 26th century
Decades:	2400s 2410s 2420s 2430s 2440s 2450s 2460s 2470s 2480s 2490s

The 25th century of the anno Domini (common) era will span from January 1, 2401 to December 31, 2500 of the Gregorian calendar.

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Wikipedia