8520688225 has 24 divisors (see below), whose sum is σ = 12710565440. Its totient is φ = 5535241920.

The previous prime is 8520688219. The next prime is 8520688229. The reversal of 8520688225 is 5228860258.

It is not a de Polignac number, because 8520688225 - 2²⁵ = 8487133793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8520688229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1277982 + ... + 1284631.

Almost surely, 2^8520688225 is an apocalyptic number.

It is an amenable number.

8520688225 is a deficient number, since it is larger than the sum of its proper divisors (4189877215).

8520688225 is a wasteful number, since it uses less digits than its factorization.

8520688225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562649 (or 2562644 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 46.

The square root of 8520688225 is about 92307.5740391871. The cubic root of 8520688225 is about 2042.4819388685.

The spelling of 8520688225 in words is "eight billion, five hundred twenty million, six hundred eighty-eight thousand, two hundred twenty-five".