520717025 has 12 divisors (see below), whose sum is σ = 649426812. Its totient is φ = 414162240.

The previous prime is 520716961. The next prime is 520717031.

520717025 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 6 ways, for example, as 38651089 + 482065936 = 6217^2 + 21956^2 .

It is not a de Polignac number, because 520717025 - 2⁶ = 520716961 is a prime.

It is a super-2 number, since 2×520717025² = 542292440249701250, which contains 22 as substring.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 55874 + ... + 64523.

It is an arithmetic number, because the mean of its divisors is an integer number (54118901).

Almost surely, 2^520717025 is an apocalyptic number.

It is an amenable number.

520717025 is a deficient number, since it is larger than the sum of its proper divisors (128709787).

520717025 is a wasteful number, since it uses less digits than its factorization.

520717025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120580 (or 120575 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 520717025 is about 22819.2248991941. The cubic root of 520717025 is about 804.5145923334.

The spelling of 520717025 in words is "five hundred twenty million, seven hundred seventeen thousand, twenty-five".