257259172 has 6 divisors (see below), whose sum is σ = 450203558. Its totient is φ = 128629584.

The previous prime is 257259139. The next prime is 257259193. The reversal of 257259172 is 271952752.

257259172 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 235131556 + 22127616 = 15334^2 + 4704^2 .

257259172 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32157393 + ... + 32157400.

Almost surely, 2^257259172 is an apocalyptic number.

It is an amenable number.

257259172 is a deficient number, since it is larger than the sum of its proper divisors (192944386).

257259172 is a wasteful number, since it uses less digits than its factorization.

257259172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64314797 (or 64314795 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 257259172 is about 16039.3008575810. The cubic root of 257259172 is about 635.9997659638. Note that the first 3 decimals are identical.

The spelling of 257259172 in words is "two hundred fifty-seven million, two hundred fifty-nine thousand, one hundred seventy-two".