257550600506020 has 24 divisors (see below), whose sum is σ = 543218078806200. Its totient is φ = 102570370156032.

The previous prime is 257550600505997. The next prime is 257550600506071. The reversal of 257550600506020 is 20605006055752.

It can be written as a sum of positive squares in 4 ways, for example, as 165205727084644 + 92344873421376 = 12853238^2 + 9609624^2 .

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, 28116873205 + ... + 28116882364.

It is an arithmetic number, because the mean of its divisors is an integer number (22634086616925).

Almost surely, 2^{257550600506020} is an apocalyptic number.

257550600506020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257550600506020 is an abundant number, since it is smaller than the sum of its proper divisors (285667478300180).

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

257550600506020 is a wasteful number, since it uses less digits than its factorization.

257550600506020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56233755807 (or 56233755805 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 257550600506020 in words is "two hundred fifty-seven trillion, five hundred fifty billion, six hundred million, five hundred six thousand, twenty".