520523125 has 10 divisors (see below), whose sum is σ = 650446478. Its totient is φ = 416418000.

The previous prime is 520523111. The next prime is 520523147. The reversal of 520523125 is 521325025.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 58874929 + 461648196 = 7673^2 + 21486^2 .

It is not a de Polignac number, because 520523125 - 2¹¹ = 520521077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520523125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 415794 + ... + 417043.

Almost surely, 2^520523125 is an apocalyptic number.

It is an amenable number.

520523125 is a deficient number, since it is larger than the sum of its proper divisors (129923353).

520523125 is an frugal number, since it uses more digits than its factorization.

520523125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832857 (or 832842 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 520523125 is about 22814.9758930401. The cubic root of 520523125 is about 804.4147205933.

The spelling of 520523125 in words is "five hundred twenty million, five hundred twenty-three thousand, one hundred twenty-five".