556690725 has 30 divisors (see below), whose sum is σ = 1031187410. Its totient is φ = 296900640.

The previous prime is 556690703. The next prime is 556690751. The reversal of 556690725 is 527096655.

556690725 is a `hidden beast` number, since 556 + 6 + 90 + 7 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 23357889 + 533332836 = 4833^2 + 23094^2 .

It is not a de Polignac number, because 556690725 - 2¹⁴ = 556674341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 135430 + ... + 139479.

Almost surely, 2^556690725 is an apocalyptic number.

It is an amenable number.

556690725 is a deficient number, since it is larger than the sum of its proper divisors (474496685).

556690725 is a wasteful number, since it uses less digits than its factorization.

556690725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274931 (or 274917 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 556690725 is about 23594.2943314692. The cubic root of 556690725 is about 822.6302242357.

The spelling of 556690725 in words is "five hundred fifty-six million, six hundred ninety thousand, seven hundred twenty-five".