257605472 has 24 divisors (see below), whose sum is σ = 512091216. Its totient is φ = 127550592.

The previous prime is 257605457. The next prime is 257605483. The reversal of 257605472 is 274506752.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35783 + ... + 42374.

It is an arithmetic number, because the mean of its divisors is an integer number (21337134).

Almost surely, 2^257605472 is an apocalyptic number.

It is an amenable number.

257605472 is a deficient number, since it is larger than the sum of its proper divisors (254485744).

257605472 is a wasteful number, since it uses less digits than its factorization.

257605472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78270 (or 78262 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 257605472 is about 16050.0925854027. The cubic root of 257605472 is about 636.2850139304.

The spelling of 257605472 in words is "two hundred fifty-seven million, six hundred five thousand, four hundred seventy-two".