25553256 has 32 divisors (see below), whose sum is σ = 64013760. Its totient is φ = 8500352.

The previous prime is 25553243. The next prime is 25553279. The reversal of 25553256 is 65235552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17116 + ... + 18548.

It is an arithmetic number, because the mean of its divisors is an integer number (2000430).

Almost surely, 2^25553256 is an apocalyptic number.

It is an amenable number.

25553256 is an abundant number, since it is smaller than the sum of its proper divisors (38460504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25553256 is a wasteful number, since it uses less digits than its factorization.

25553256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185 (or 2181 counting only the distinct ones).

The product of its digits is 45000, while the sum is 33.

The square root of 25553256 is about 5055.0228486131. The cubic root of 25553256 is about 294.5430289667.

The spelling of 25553256 in words is "twenty-five million, five hundred fifty-three thousand, two hundred fifty-six".