520565025 has 48 divisors (see below), whose sum is σ = 890568000. Its totient is φ = 268104960.

The previous prime is 520564991. The next prime is 520565029.

520565025 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 520565025 - 2¹⁹ = 520040737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520564983 and 520565001.

It is not an unprimeable number, because it can be changed into a prime (520565029) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 412846 + ... + 414104.

It is an arithmetic number, because the mean of its divisors is an integer number (18553500).

Almost surely, 2^520565025 is an apocalyptic number.

It is an amenable number.

520565025 is a deficient number, since it is larger than the sum of its proper divisors (370002975).

520565025 is a wasteful number, since it uses less digits than its factorization.

520565025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 1453 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 520565025 is about 22815.8941310657. The cubic root of 520565025 is about 804.4363040548.

The spelling of 520565025 in words is "five hundred twenty million, five hundred sixty-five thousand, twenty-five".