656232525 has 72 divisors (see below), whose sum is σ = 1274753480. Its totient is φ = 320785920.

The previous prime is 656232523. The next prime is 656232529. The reversal of 656232525 is 525232656.

656232525 is a `hidden beast` number, since 6 + 5 + 623 + 2 + 5 + 25 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 520113636 + 136118889 = 22806^2 + 11667^2 .

It is not a de Polignac number, because 656232525 - 2¹ = 656232523 is a prime.

It is a super-2 number, since 2×656232525² = 861282253735751250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 656232525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656232523) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 458511 + ... + 459939.

Almost surely, 2^656232525 is an apocalyptic number.

656232525 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

656232525 is a deficient number, since it is larger than the sum of its proper divisors (618520955).

656232525 is a wasteful number, since it uses less digits than its factorization.

656232525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615 (or 1607 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 656232525 is about 25617.0358355529. The cubic root of 656232525 is about 868.9989476845.

The spelling of 656232525 in words is "six hundred fifty-six million, two hundred thirty-two thousand, five hundred twenty-five".