257500275 has 24 divisors (see below), whose sum is σ = 450779184. Its totient is φ = 129254400.

The previous prime is 257500267. The next prime is 257500277. The reversal of 257500275 is 572005752.

It is not a de Polignac number, because 257500275 - 2³ = 257500267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257500277) 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, 99706 + ... + 102255.

It is an arithmetic number, because the mean of its divisors is an integer number (18782466).

Almost surely, 2^257500275 is an apocalyptic number.

257500275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

257500275 is a deficient number, since it is larger than the sum of its proper divisors (193278909).

257500275 is a wasteful number, since it uses less digits than its factorization.

257500275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201991 (or 201986 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 257500275 is about 16046.8151045620. The cubic root of 257500275 is about 636.1983900096.

The spelling of 257500275 in words is "two hundred fifty-seven million, five hundred thousand, two hundred seventy-five".