25317328 has 20 divisors (see below), whose sum is σ = 50635648. Its totient is φ = 12250080.

The previous prime is 25317293. The next prime is 25317337. The reversal of 25317328 is 82371352.

25317328 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 25317328.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25026 + ... + 26017.

Almost surely, 2^25317328 is an apocalyptic number.

It is an amenable number.

25317328 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25317328 is a wasteful number, since it uses less digits than its factorization.

25317328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51082 (or 51076 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 25317328 is about 5031.6327369950. The cubic root of 25317328 is about 293.6337395365.

The spelling of 25317328 in words is "twenty-five million, three hundred seventeen thousand, three hundred twenty-eight".