656381425 has 12 divisors (see below), whose sum is σ = 930186496. Its totient is φ = 450090000.

The previous prime is 656381419. The next prime is 656381483. The reversal of 656381425 is 524183656.

It is not a de Polignac number, because 656381425 - 2³ = 656381417 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian 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, 1875201 + ... + 1875550.

Almost surely, 2^656381425 is an apocalyptic number.

It is an amenable number.

656381425 is a deficient number, since it is larger than the sum of its proper divisors (273805071).

656381425 is a wasteful number, since it uses less digits than its factorization.

656381425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750768 (or 3750763 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 656381425 is about 25619.9419398249. The cubic root of 656381425 is about 869.0646683719.

The spelling of 656381425 in words is "six hundred fifty-six million, three hundred eighty-one thousand, four hundred twenty-five".