25457928 has 16 divisors (see below), whose sum is σ = 63644880. Its totient is φ = 8485968.

The previous prime is 25457921. The next prime is 25457933. The reversal of 25457928 is 82975452.

It is a self number, because there is not a number n which added to its sum of digits gives 25457928.

It is not an unprimeable number, because it can be changed into a prime (25457921) 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, 530350 + ... + 530397.

It is an arithmetic number, because the mean of its divisors is an integer number (3977805).

Almost surely, 2^25457928 is an apocalyptic number.

It is an amenable number.

25457928 is an abundant number, since it is smaller than the sum of its proper divisors (38186952).

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

25457928 is a wasteful number, since it uses less digits than its factorization.

25457928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060756 (or 1060752 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 25457928 is about 5045.5850007705. The cubic root of 25457928 is about 294.1763022343.

The spelling of 25457928 in words is "twenty-five million, four hundred fifty-seven thousand, nine hundred twenty-eight".