257465408 has 28 divisors (see below), whose sum is σ = 540963612. Its totient is φ = 121159680.

The previous prime is 257465401. The next prime is 257465413. The reversal of 257465408 is 804564752.

It can be written as a sum of positive squares in 2 ways, for example, as 216913984 + 40551424 = 14728^2 + 6368^2 .

It is not an unprimeable number, because it can be changed into a prime (257465401) 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, 117233 + ... + 119408.

It is an arithmetic number, because the mean of its divisors is an integer number (19320129).

Almost surely, 2^257465408 is an apocalyptic number.

It is an amenable number.

257465408 is an abundant number, since it is smaller than the sum of its proper divisors (283498204).

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

257465408 is a wasteful number, since it uses less digits than its factorization.

257465408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236670 (or 236660 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The square root of 257465408 is about 16045.7286528222. The cubic root of 257465408 is about 636.1696737548.

The spelling of 257465408 in words is "two hundred fifty-seven million, four hundred sixty-five thousand, four hundred eight".