15625256 has 8 divisors (see below), whose sum is σ = 29297370. Its totient is φ = 7812624.

The previous prime is 15625243. The next prime is 15625283. The reversal of 15625256 is 65252651.

15625256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 4268356 = 3370^2 + 2066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976571 + ... + 976586.

Almost surely, 2^15625256 is an apocalyptic number.

It is an amenable number.

15625256 is a deficient number, since it is larger than the sum of its proper divisors (13672114).

15625256 is a wasteful number, since it uses less digits than its factorization.

15625256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953163 (or 1953159 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 15625256 is about 3952.8794568011. The cubic root of 15625256 is about 250.0013653259.

It can be divided in two parts, 15625 and 256, that multiplied together give a square (4000000 = 2000²).

The spelling of 15625256 in words is "fifteen million, six hundred twenty-five thousand, two hundred fifty-six".