25688972 has 12 divisors (see below), whose sum is σ = 47600280. Its totient is φ = 12088896.

The previous prime is 25688933. The next prime is 25688977. The reversal of 25688972 is 27988652.

It is not an unprimeable number, because it can be changed into a prime (25688977) 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, 188822 + ... + 188957.

It is an arithmetic number, because the mean of its divisors is an integer number (3966690).

Almost surely, 2^25688972 is an apocalyptic number.

It is an amenable number.

25688972 is a deficient number, since it is larger than the sum of its proper divisors (21911308).

25688972 is a wasteful number, since it uses less digits than its factorization.

25688972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377800 (or 377798 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 25688972 is about 5068.4289479088. The cubic root of 25688972 is about 295.0635580759.

The spelling of 25688972 in words is "twenty-five million, six hundred eighty-eight thousand, nine hundred seventy-two".