257263275 has 24 divisors (see below), whose sum is σ = 427740480. Its totient is φ = 136433440.

The previous prime is 257263273. The next prime is 257263313. The reversal of 257263275 is 572362752.

It is not a de Polignac number, because 257263275 - 2¹ = 257263273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257263271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3844 + ... + 23006.

It is an arithmetic number, because the mean of its divisors is an integer number (17822520).

Almost surely, 2^257263275 is an apocalyptic number.

257263275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

257263275 is a deficient number, since it is larger than the sum of its proper divisors (170477205).

257263275 is a wasteful number, since it uses less digits than its factorization.

257263275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19355 (or 19350 counting only the distinct ones).

The product of its digits is 176400, while the sum is 39.

The square root of 257263275 is about 16039.4287616486. The cubic root of 257263275 is about 636.0031471107.

The spelling of 257263275 in words is "two hundred fifty-seven million, two hundred sixty-three thousand, two hundred seventy-five".