520252505 has 16 divisors (see below), whose sum is σ = 638934480. Its totient is φ = 406518528.

The previous prime is 520252457. The next prime is 520252517. The reversal of 520252505 is 505252025.

It can be written as a sum of positive squares in 8 ways, for example, as 23319241 + 496933264 = 4829^2 + 22292^2 .

It is a cyclic number.

It is not a de Polignac number, because 520252505 - 2⁶ = 520252441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56399 + ... + 64971.

It is an arithmetic number, because the mean of its divisors is an integer number (39933405).

Almost surely, 2^520252505 is an apocalyptic number.

It is an amenable number.

520252505 is a deficient number, since it is larger than the sum of its proper divisors (118681975).

520252505 is a wasteful number, since it uses less digits than its factorization.

520252505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8860.

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 520252505 is about 22809.0443684079. The cubic root of 520252505 is about 804.2752913423.

The spelling of 520252505 in words is "five hundred twenty million, two hundred fifty-two thousand, five hundred five".