257825992 has 32 divisors (see below), whose sum is σ = 492912000. Its totient is φ = 126403200.

The previous prime is 257825989. The next prime is 257826011. The reversal of 257825992 is 299528752.

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, 111892 + ... + 114172.

It is an arithmetic number, because the mean of its divisors is an integer number (15403500).

Almost surely, 2^257825992 is an apocalyptic number.

It is an amenable number.

257825992 is a deficient number, since it is larger than the sum of its proper divisors (235086008).

257825992 is a wasteful number, since it uses less digits than its factorization.

257825992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557 (or 2553 counting only the distinct ones).

The product of its digits is 907200, while the sum is 49.

The square root of 257825992 is about 16056.9608581450. The cubic root of 257825992 is about 636.4665234707.

The spelling of 257825992 in words is "two hundred fifty-seven million, eight hundred twenty-five thousand, nine hundred ninety-two".