257259264 has 36 divisors (see below), whose sum is σ = 684686856. Its totient is φ = 85752832.

The previous prime is 257259253. The next prime is 257259269. The reversal of 257259264 is 462952752.

257259264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257259269) 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, 166719 + ... + 168254.

Almost surely, 2^257259264 is an apocalyptic number.

257259264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

257259264 is an abundant number, since it is smaller than the sum of its proper divisors (427427592).

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

257259264 is an equidigital number, since it uses as much as digits as its factorization.

257259264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334992 (or 334978 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 257259264 is about 16039.3037255362. The cubic root of 257259264 is about 635.9998417784. Note that the first 3 decimals are identical.

The spelling of 257259264 in words is "two hundred fifty-seven million, two hundred fifty-nine thousand, two hundred sixty-four".