520215325 has 24 divisors (see below), whose sum is σ = 741523968. Its totient is φ = 354636480.

The previous prime is 520215313. The next prime is 520215337. The reversal of 520215325 is 523512025.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (520215313) and next prime (520215337).

It is not a de Polignac number, because 520215325 - 2⁷ = 520215197 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 520215325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21684 + ... + 38866.

It is an arithmetic number, because the mean of its divisors is an integer number (30896832).

Almost surely, 2^520215325 is an apocalyptic number.

It is an amenable number.

520215325 is a deficient number, since it is larger than the sum of its proper divisors (221308643).

520215325 is a wasteful number, since it uses less digits than its factorization.

520215325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17373 (or 17368 counting only the distinct ones).

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

The square root of 520215325 is about 22808.2293262761. The cubic root of 520215325 is about 804.2561316282.

The spelling of 520215325 in words is "five hundred twenty million, two hundred fifteen thousand, three hundred twenty-five".