656493925 has 12 divisors (see below), whose sum is σ = 814385376. Its totient is φ = 524980400.

The previous prime is 656493919. The next prime is 656493973. The reversal of 656493925 is 529394656.

It is a happy number.

It is not a de Polignac number, because 656493925 - 2³ = 656493917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90690 + ... + 97660.

It is an arithmetic number, because the mean of its divisors is an integer number (67865448).

Almost surely, 2^656493925 is an apocalyptic number.

It is an amenable number.

656493925 is a deficient number, since it is larger than the sum of its proper divisors (157891451).

656493925 is a wasteful number, since it uses less digits than its factorization.

656493925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10748 (or 10743 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 49.

The square root of 656493925 is about 25622.1374010835. The cubic root of 656493925 is about 869.1143164304.

It can be divided in two parts, 6564 and 93925, that added together give a square (100489 = 317²).

The spelling of 656493925 in words is "six hundred fifty-six million, four hundred ninety-three thousand, nine hundred twenty-five".