257474725 has 12 divisors (see below), whose sum is σ = 319488480. Its totient is φ = 205838000.

The previous prime is 257474713. The next prime is 257474743. The reversal of 257474725 is 527474752.

It is a de Polignac number, because none of the positive numbers 2^k-257474725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48450 + ... + 53500.

It is an arithmetic number, because the mean of its divisors is an integer number (26624040).

Almost surely, 2^257474725 is an apocalyptic number.

257474725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

257474725 is a deficient number, since it is larger than the sum of its proper divisors (62013755).

257474725 is a wasteful number, since it uses less digits than its factorization.

257474725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100 (or 7095 counting only the distinct ones).

The product of its digits is 548800, while the sum is 43.

The square root of 257474725 is about 16046.0189766808. The cubic root of 257474725 is about 636.1773474347.

The spelling of 257474725 in words is "two hundred fifty-seven million, four hundred seventy-four thousand, seven hundred twenty-five".