125520511364 has 24 divisors (see below), whose sum is σ = 232683668280. Its totient is φ = 59042686976.

The previous prime is 125520511331. The next prime is 125520511387. The reversal of 125520511364 is 463115025521.

It can be written as a sum of positive squares in 4 ways, for example, as 43814862400 + 81705648964 = 209320^2 + 285842^2 .

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, 245609 + ... + 558000.

It is an arithmetic number, because the mean of its divisors is an integer number (9695152845).

Almost surely, 2^125520511364 is an apocalyptic number.

It is an amenable number.

125520511364 is a deficient number, since it is larger than the sum of its proper divisors (107163156916).

125520511364 is a wasteful number, since it uses less digits than its factorization.

125520511364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805927 (or 805925 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 125520511364 its reverse (463115025521), we get a palindrome (588635536885).

The spelling of 125520511364 in words is "one hundred twenty-five billion, five hundred twenty million, five hundred eleven thousand, three hundred sixty-four".