522686225 has 6 divisors (see below), whose sum is σ = 648130950. Its totient is φ = 418148960.

The previous prime is 522686221. The next prime is 522686243.

522686225 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 13010449 + 509675776 = 3607^2 + 22576^2 .

It is not a de Polignac number, because 522686225 - 2² = 522686221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (522686221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10453700 + ... + 10453749.

It is an arithmetic number, because the mean of its divisors is an integer number (108021825).

Almost surely, 2^522686225 is an apocalyptic number.

It is an amenable number.

522686225 is a deficient number, since it is larger than the sum of its proper divisors (125444725).

522686225 is a wasteful number, since it uses less digits than its factorization.

522686225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20907459 (or 20907454 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 522686225 is about 22862.3320114113. The cubic root of 522686225 is about 805.5274631680.

The spelling of 522686225 in words is "five hundred twenty-two million, six hundred eighty-six thousand, two hundred twenty-five".