25081256 has 32 divisors (see below), whose sum is σ = 50077440. Its totient is φ = 11735808.

The previous prime is 25081253. The next prime is 25081279. The reversal of 25081256 is 65218052.

It is a super-3 number, since 3×25081256³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25081253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29915 + ... + 30741.

It is an arithmetic number, because the mean of its divisors is an integer number (1564920).

Almost surely, 2^25081256 is an apocalyptic number.

It is an amenable number.

25081256 is a deficient number, since it is larger than the sum of its proper divisors (24996184).

25081256 is a wasteful number, since it uses less digits than its factorization.

25081256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 25081256 is about 5008.1190081706. The cubic root of 25081256 is about 292.7182232035.

It can be divided in two parts, 25081 and 256, that multiplied together give a triangular number (6420736 = T₃₅₈₃).

The spelling of 25081256 in words is "twenty-five million, eighty-one thousand, two hundred fifty-six".