520525 has 12 divisors (see below), whose sum is σ = 660672. Its totient is φ = 406640.

The previous prime is 520451. The next prime is 520529. The reversal of 520525 is 525025.

520525 = 45³ + 46³ + ... + 49³.

It is not a de Polignac number, because 520525 - 2¹³ = 512333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 954 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (55056).

2⁵²⁰⁵²⁵ is an apocalyptic number.

It is an amenable number.

520525 is a deficient number, since it is larger than the sum of its proper divisors (140147).

520525 is a wasteful number, since it uses less digits than its factorization.

520525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 520525 is about 721.4741852624. The cubic root of 520525 is about 80.4415686465.

Subtracting from 520525 its product of nonzero digits (500), we obtain a palindrome (520025).

The spelling of 520525 in words is "five hundred twenty thousand, five hundred twenty-five".