2565439830120 has 128 divisors (see below), whose sum is σ = 7714698163200. Its totient is φ = 682484514816.

The previous prime is 2565439830113. The next prime is 2565439830127. The reversal of 2565439830120 is 210389345652.

It is an interprime number because it is at equal distance from previous prime (2565439830113) and next prime (2565439830127).

It is a super-2 number, since 2×2565439830120² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2565439830120.

It is not an unprimeable number, because it can be changed into a prime (2565439830127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367696072 + ... + 367703048.

It is an arithmetic number, because the mean of its divisors is an integer number (60271079400).

Almost surely, 2^{2565439830120} is an apocalyptic number.

2565439830120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2565439830120 is an abundant number, since it is smaller than the sum of its proper divisors (5149258333080).

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

2565439830120 is a wasteful number, since it uses less digits than its factorization.

2565439830120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13867 (or 13863 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 2565439830120 in words is "two trillion, five hundred sixty-five billion, four hundred thirty-nine million, eight hundred thirty thousand, one hundred twenty".