257514375 has 20 divisors (see below), whose sum is σ = 429056408. Its totient is φ = 137340000.

The previous prime is 257514349. The next prime is 257514421. The reversal of 257514375 is 573415752.

It is a happy number.

It is not a de Polignac number, because 257514375 - 2⁷ = 257514247 is a prime.

It is a Duffinian 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 19 ways as a sum of consecutive naturals, for example, 66796 + ... + 70545.

Almost surely, 2^257514375 is an apocalyptic number.

257514375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

257514375 is a deficient number, since it is larger than the sum of its proper divisors (171542033).

257514375 is an equidigital number, since it uses as much as digits as its factorization.

257514375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137364 (or 137349 counting only the distinct ones).

The product of its digits is 147000, while the sum is 39.

The square root of 257514375 is about 16047.2544380651. The cubic root of 257514375 is about 636.2100019501.

The spelling of 257514375 in words is "two hundred fifty-seven million, five hundred fourteen thousand, three hundred seventy-five".