520505025 has 24 divisors (see below), whose sum is σ = 878884224. Its totient is φ = 271694400.

The previous prime is 520505023. The next prime is 520505053.

520505025 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 520505025 - 2¹ = 520505023 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 520504986 and 520505004.

It is not an unprimeable number, because it can be changed into a prime (520505023) 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 23 ways as a sum of consecutive naturals, for example, 70306 + ... + 77355.

It is an arithmetic number, because the mean of its divisors is an integer number (36620176).

Almost surely, 2^520505025 is an apocalyptic number.

It is an amenable number.

520505025 is a deficient number, since it is larger than the sum of its proper divisors (358379199).

520505025 is a wasteful number, since it uses less digits than its factorization.

520505025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147721 (or 147716 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 520505025 is about 22814.5792203144. The cubic root of 520505025 is about 804.4053965918.

It can be divided in two parts, 52050 and 5025, that added together give a palindrome (57075).

The spelling of 520505025 in words is "five hundred twenty million, five hundred five thousand, twenty-five".