520516625 has 32 divisors (see below), whose sum is σ = 690666912. Its totient is φ = 390297600.

The previous prime is 520516597. The next prime is 520516631. The reversal of 520516625 is 526615025.

It can be written as a sum of positive squares in 16 ways, for example, as 400920529 + 119596096 = 20023^2 + 10936^2 .

It is not a de Polignac number, because 520516625 - 2¹⁰ = 520515601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 520516591 and 520516600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 843317 + ... + 843933.

It is an arithmetic number, because the mean of its divisors is an integer number (21583341).

Almost surely, 2^520516625 is an apocalyptic number.

It is an amenable number.

520516625 is a deficient number, since it is larger than the sum of its proper divisors (170150287).

520516625 is a wasteful number, since it uses less digits than its factorization.

520516625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 520516625 is about 22814.8334423024. The cubic root of 520516625 is about 804.4113722199.

The spelling of 520516625 in words is "five hundred twenty million, five hundred sixteen thousand, six hundred twenty-five".