511020642625 has 16 divisors (see below), whose sum is σ = 638043075072. Its totient is φ = 408631057200.

The previous prime is 511020642553. The next prime is 511020642647. The reversal of 511020642625 is 526246020115.

It is not a de Polignac number, because 511020642625 - 2²³ = 511012254017 is a prime.

It is a super-2 number, since 2×511020642625² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650307 + ... + 1202056.

It is an arithmetic number, because the mean of its divisors is an integer number (39877692192).

Almost surely, 2^511020642625 is an apocalyptic number.

It is an amenable number.

511020642625 is a deficient number, since it is larger than the sum of its proper divisors (127022432447).

511020642625 is a wasteful number, since it uses less digits than its factorization.

511020642625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854585 (or 1854575 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 511020642625 in words is "five hundred eleven billion, twenty million, six hundred forty-two thousand, six hundred twenty-five".