257374755520 has 56 divisors (see below), whose sum is σ = 615953556000. Its totient is φ = 102432540672.

The previous prime is 257374755511. The next prime is 257374755523. The reversal of 257374755520 is 25557473752.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (257374755523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1957165 + ... + 2084524.

Almost surely, 2^257374755520 is an apocalyptic number.

257374755520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257374755520 is an abundant number, since it is smaller than the sum of its proper divisors (358578800480).

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

257374755520 is a wasteful number, since it uses less digits than its factorization.

257374755520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041905 (or 4041895 counting only the distinct ones).

The product of its (nonzero) digits is 10290000, while the sum is 52.

The spelling of 257374755520 in words is "two hundred fifty-seven billion, three hundred seventy-four million, seven hundred fifty-five thousand, five hundred twenty".