2565205231504 has 20 divisors (see below), whose sum is σ = 5000576460976. Its totient is φ = 1274733886752.

The previous prime is 2565205231439. The next prime is 2565205231513. The reversal of 2565205231504 is 4051325025652.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491792874 + ... + 491798089.

Almost surely, 2^{2565205231504} is an apocalyptic number.

It is an amenable number.

2565205231504 is a deficient number, since it is larger than the sum of its proper divisors (2435371229472).

2565205231504 is a wasteful number, since it uses less digits than its factorization.

2565205231504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983591134 (or 983591128 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 2565205231504 in words is "two trillion, five hundred sixty-five billion, two hundred five million, two hundred thirty-one thousand, five hundred four".