25217968 has 20 divisors (see below), whose sum is σ = 49175920. Its totient is φ = 12527424.

The previous prime is 25217947. The next prime is 25217981. The reversal of 25217968 is 86971252.

It is a self number, because there is not a number n which added to its sum of digits gives 25217968.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2508 + ... + 7531.

It is an arithmetic number, because the mean of its divisors is an integer number (2458796).

Almost surely, 2^25217968 is an apocalyptic number.

It is an amenable number.

25217968 is a deficient number, since it is larger than the sum of its proper divisors (23957952).

25217968 is a wasteful number, since it uses less digits than its factorization.

25217968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10204 (or 10198 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 25217968 is about 5021.7494959426. The cubic root of 25217968 is about 293.2491057530.

The spelling of 25217968 in words is "twenty-five million, two hundred seventeen thousand, nine hundred sixty-eight".