257525575252 has 12 divisors (see below), whose sum is σ = 491639734656. Its totient is φ = 117057079640.

The previous prime is 257525575247. The next prime is 257525575253. The reversal of 257525575252 is 252575525752.

It is a self number, because there is not a number n which added to its sum of digits gives 257525575252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257525575253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2926426948 + ... + 2926427035.

It is an arithmetic number, because the mean of its divisors is an integer number (40969977888).

Almost surely, 2^257525575252 is an apocalyptic number.

257525575252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

257525575252 is a deficient number, since it is larger than the sum of its proper divisors (234114159404).

257525575252 is a wasteful number, since it uses less digits than its factorization.

257525575252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5852853998 (or 5852853996 counting only the distinct ones).

The product of its digits is 12250000, while the sum is 52.

The spelling of 257525575252 in words is "two hundred fifty-seven billion, five hundred twenty-five million, five hundred seventy-five thousand, two hundred fifty-two".