25431968 has 12 divisors (see below), whose sum is σ = 50069250. Its totient is φ = 12715968.

The previous prime is 25431961. The next prime is 25431971. The reversal of 25431968 is 86913452.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20539024 + 4892944 = 4532^2 + 2212^2 .

It is not an unprimeable number, because it can be changed into a prime (25431961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 397343 + ... + 397406.

Almost surely, 2^25431968 is an apocalyptic number.

It is an amenable number.

25431968 is a deficient number, since it is larger than the sum of its proper divisors (24637282).

25431968 is an equidigital number, since it uses as much as digits as its factorization.

25431968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794759 (or 794751 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 25431968 is about 5043.0117985188. The cubic root of 25431968 is about 294.0762755801.

The spelling of 25431968 in words is "twenty-five million, four hundred thirty-one thousand, nine hundred sixty-eight".