404125664 has 24 divisors (see below), whose sum is σ = 806526000. Its totient is φ = 199293696.

The previous prime is 404125661. The next prime is 404125669. The reversal of 404125664 is 466521404.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 404125664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404125661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84164 + ... + 88835.

It is an arithmetic number, because the mean of its divisors is an integer number (33605250).

Almost surely, 2^404125664 is an apocalyptic number.

It is an amenable number.

404125664 is a deficient number, since it is larger than the sum of its proper divisors (402400336).

404125664 is a wasteful number, since it uses less digits than its factorization.

404125664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173082 (or 173074 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 404125664 is about 20102.8770080305. The cubic root of 404125664 is about 739.3308194411.

The spelling of 404125664 in words is "four hundred four million, one hundred twenty-five thousand, six hundred sixty-four".