25617256 has 32 divisors (see below), whose sum is σ = 56067840. Its totient is φ = 10744128.

The previous prime is 25617211. The next prime is 25617259. The reversal of 25617256 is 65271652.

It is not an unprimeable number, because it can be changed into a prime (25617259) 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, 2235 + ... + 7498.

It is an arithmetic number, because the mean of its divisors is an integer number (1752120).

Almost surely, 2^25617256 is an apocalyptic number.

It is an amenable number.

25617256 is an abundant number, since it is smaller than the sum of its proper divisors (30450584).

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

25617256 is a wasteful number, since it uses less digits than its factorization.

25617256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9793 (or 9789 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 25617256 is about 5061.3492272318. The cubic root of 25617256 is about 294.7887254841.

The spelling of 25617256 in words is "twenty-five million, six hundred seventeen thousand, two hundred fifty-six".