257530252580 has 24 divisors (see below), whose sum is σ = 569277401280. Its totient is φ = 97590411360.

The previous prime is 257530252493. The next prime is 257530252591. The reversal of 257530252580 is 85252035752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338855216 + ... + 338855975.

It is an arithmetic number, because the mean of its divisors is an integer number (23719891720).

Almost surely, 2^257530252580 is an apocalyptic number.

257530252580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257530252580 is an abundant number, since it is smaller than the sum of its proper divisors (311747148700).

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

257530252580 is a wasteful number, since it uses less digits than its factorization.

257530252580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677711219 (or 677711217 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 257530252580 in words is "two hundred fifty-seven billion, five hundred thirty million, two hundred fifty-two thousand, five hundred eighty".