257133594956 has 24 divisors (see below), whose sum is σ = 515125766400. Its totient is φ = 110016131472.

The previous prime is 257133594953. The next prime is 257133594967. The reversal of 257133594956 is 659495331752.

It is a super-2 number, since 2×257133594956² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257133594895 and 257133594904.

It is not an unprimeable number, because it can be changed into a prime (257133594953) 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, 7648790 + ... + 7682333.

It is an arithmetic number, because the mean of its divisors is an integer number (21463573600).

Almost surely, 2^257133594956 is an apocalyptic number.

It is an amenable number.

257133594956 is an abundant number, since it is smaller than the sum of its proper divisors (257992171444).

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

257133594956 is a wasteful number, since it uses less digits than its factorization.

257133594956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15331733 (or 15331731 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 59.

The spelling of 257133594956 in words is "two hundred fifty-seven billion, one hundred thirty-three million, five hundred ninety-four thousand, nine hundred fifty-six".