25057256 has 16 divisors (see below), whose sum is σ = 53694240. Its totient is φ = 10738800.

The previous prime is 25057237. The next prime is 25057259. The reversal of 25057256 is 65275052.

It is not an unprimeable number, because it can be changed into a prime (25057259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223670 + ... + 223781.

It is an arithmetic number, because the mean of its divisors is an integer number (3355890).

Almost surely, 2^25057256 is an apocalyptic number.

It is an amenable number.

25057256 is an abundant number, since it is smaller than the sum of its proper divisors (28636984).

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

25057256 is a wasteful number, since it uses less digits than its factorization.

25057256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447464 (or 447460 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 25057256 is about 5005.7223254991. The cubic root of 25057256 is about 292.6248270389.

The spelling of 25057256 in words is "twenty-five million, fifty-seven thousand, two hundred fifty-six".