257085404 has 24 divisors (see below), whose sum is σ = 461937168. Its totient is φ = 125141120.

The previous prime is 257085379. The next prime is 257085461. The reversal of 257085404 is 404580752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23144 + ... + 32400.

It is an arithmetic number, because the mean of its divisors is an integer number (19247382).

Almost surely, 2^257085404 is an apocalyptic number.

It is an amenable number.

257085404 is a deficient number, since it is larger than the sum of its proper divisors (204851764).

257085404 is a wasteful number, since it uses less digits than its factorization.

257085404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9445 (or 9443 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 257085404 is about 16033.8829982010. The cubic root of 257085404 is about 635.8565364741.

The spelling of 257085404 in words is "two hundred fifty-seven million, eighty-five thousand, four hundred four".