15725648 has 40 divisors (see below), whose sum is σ = 31426560. Its totient is φ = 7620480.

The previous prime is 15725639. The next prime is 15725657. The reversal of 15725648 is 84652751.

It is an interprime number because it is at equal distance from previous prime (15725639) and next prime (15725657).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123761 + ... + 123887.

It is an arithmetic number, because the mean of its divisors is an integer number (785664).

Almost surely, 2^15725648 is an apocalyptic number.

It is an amenable number.

15725648 is a deficient number, since it is larger than the sum of its proper divisors (15700912).

15725648 is a wasteful number, since it uses less digits than its factorization.

15725648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 309 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 15725648 is about 3965.5577161353. The cubic root of 15725648 is about 250.5356408691.

The spelling of 15725648 in words is "fifteen million, seven hundred twenty-five thousand, six hundred forty-eight".