520251125 has 8 divisors (see below), whose sum is σ = 649273560. Its totient is φ = 416200800.

The previous prime is 520251113. The next prime is 520251133. The reversal of 520251125 is 521152025.

It can be written as a sum of positive squares in 4 ways, for example, as 116683204 + 403567921 = 10802^2 + 20089^2 .

It is a de Polignac number, because none of the positive numbers 2^k-520251125 is a prime.

It is a super-2 number, since 2×520251125² = 541322466127531250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 520251125.

It is a congruent number.

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, 2080880 + ... + 2081129.

It is an arithmetic number, because the mean of its divisors is an integer number (81159195).

Almost surely, 2^520251125 is an apocalyptic number.

It is an amenable number.

520251125 is a deficient number, since it is larger than the sum of its proper divisors (129022435).

520251125 is an equidigital number, since it uses as much as digits as its factorization.

520251125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4162024 (or 4162014 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 520251125 is about 22809.0141172301. The cubic root of 520251125 is about 804.2745802127.

The spelling of 520251125 in words is "five hundred twenty million, two hundred fifty-one thousand, one hundred twenty-five".