257525508275 has 24 divisors (see below), whose sum is σ = 365026294560. Its totient is φ = 176552213760.

The previous prime is 257525508199. The next prime is 257525508277. The reversal of 257525508275 is 572805525752.

It is not a de Polignac number, because 257525508275 - 2¹⁰ = 257525507251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257525508277) 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, 705077 + ... + 1006073.

It is an arithmetic number, because the mean of its divisors is an integer number (15209428940).

Almost surely, 2^257525508275 is an apocalyptic number.

257525508275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

257525508275 is a deficient number, since it is larger than the sum of its proper divisors (107500786285).

257525508275 is a wasteful number, since it uses less digits than its factorization.

257525508275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305903 (or 305898 counting only the distinct ones).

The product of its (nonzero) digits is 9800000, while the sum is 53.

The spelling of 257525508275 in words is "two hundred fifty-seven billion, five hundred twenty-five million, five hundred eight thousand, two hundred seventy-five".