520307125 has 64 divisors (see below), whose sum is σ = 739327680. Its totient is φ = 362880000.

The previous prime is 520307119. The next prime is 520307129. The reversal of 520307125 is 521703025.

It can be written as a sum of positive squares in 32 ways, for example, as 332041284 + 188265841 = 18222^2 + 13721^2 .

It is not a de Polignac number, because 520307125 - 2⁵ = 520307093 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 520307125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520307129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2874535 + ... + 2874715.

It is an arithmetic number, because the mean of its divisors is an integer number (11551995).

Almost surely, 2^520307125 is an apocalyptic number.

It is an amenable number.

520307125 is a deficient number, since it is larger than the sum of its proper divisors (219020555).

520307125 is a wasteful number, since it uses less digits than its factorization.

520307125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 520307125 is about 22810.2416690398. The cubic root of 520307125 is about 804.3034366363.

The spelling of 520307125 in words is "five hundred twenty million, three hundred seven thousand, one hundred twenty-five".