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25! Factorial of 25

Value of 25! i.e, Factorial of 25 =
15511210043330985984
000000



In general, the factorial of a number N = N*(N-1)*(N-2)....1
Factorial of a non-negative integer n is the product of all positive integers less than or equal to n. Factorials are commonly encountered in permutations, combinations, number theory and series expansions of trigonometric and other functions (Taylor series).

Number of trailing zeros in 25! = 6
To understand factorials, you might find it useful to read the Factorial tutorial over here.
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