520646025 has 48 divisors (see below), whose sum is σ = 886800384. Its totient is φ = 269398080.

The previous prime is 520645997. The next prime is 520646039.

520646025 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 520646025 - 2⁷ = 520645897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520645983 and 520646001.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 447094 + ... + 448256.

It is an arithmetic number, because the mean of its divisors is an integer number (18475008).

Almost surely, 2^520646025 is an apocalyptic number.

It is an amenable number.

520646025 is a deficient number, since it is larger than the sum of its proper divisors (366154359).

520646025 is a wasteful number, since it uses less digits than its factorization.

520646025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1345 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 520646025 is about 22817.6691403833. The cubic root of 520646025 is about 804.4780253629.

The spelling of 520646025 in words is "five hundred twenty million, six hundred forty-six thousand, twenty-five".