257985952 has 48 divisors (see below), whose sum is σ = 611029440. Its totient is φ = 104744448.

The previous prime is 257985929. The next prime is 257985977. The reversal of 257985952 is 259589752.

It is a self number, because there is not a number n which added to its sum of digits gives 257985952.

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, 26053 + ... + 34564.

It is an arithmetic number, because the mean of its divisors is an integer number (12729780).

Almost surely, 2^257985952 is an apocalyptic number.

It is an amenable number.

257985952 is an abundant number, since it is smaller than the sum of its proper divisors (353043488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257985952 is a wasteful number, since it uses less digits than its factorization.

257985952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60653 (or 60645 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 52.

The square root of 257985952 is about 16061.9411031170. The cubic root of 257985952 is about 636.5981214486.

The spelling of 257985952 in words is "two hundred fifty-seven million, nine hundred eighty-five thousand, nine hundred fifty-two".