507668225 has 6 divisors (see below), whose sum is σ = 629508630. Its totient is φ = 406134560.

The previous prime is 507668219. The next prime is 507668233. The reversal of 507668225 is 522866705.

It can be written as a sum of positive squares in 3 ways, for example, as 86638864 + 421029361 = 9308^2 + 20519^2 .

It is not a de Polignac number, because 507668225 - 2²⁰ = 506619649 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10153340 + ... + 10153389.

It is an arithmetic number, because the mean of its divisors is an integer number (104918105).

Almost surely, 2^507668225 is an apocalyptic number.

It is an amenable number.

507668225 is a deficient number, since it is larger than the sum of its proper divisors (121840405).

507668225 is a wasteful number, since it uses less digits than its factorization.

507668225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20306739 (or 20306734 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 507668225 is about 22531.4940694132. The cubic root of 507668225 is about 797.7374744424.

The spelling of 507668225 in words is "five hundred seven million, six hundred sixty-eight thousand, two hundred twenty-five".