634874225 has 6 divisors (see below), whose sum is σ = 787244070. Its totient is φ = 507899360.

The previous prime is 634874213. The next prime is 634874239. The reversal of 634874225 is 522478436.

It can be written as a sum of positive squares in 3 ways, for example, as 12222016 + 622652209 = 3496^2 + 24953^2 .

It is not a de Polignac number, because 634874225 - 2²⁰ = 633825649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12697460 + ... + 12697509.

It is an arithmetic number, because the mean of its divisors is an integer number (131207345).

Almost surely, 2^634874225 is an apocalyptic number.

It is an amenable number.

634874225 is a deficient number, since it is larger than the sum of its proper divisors (152369845).

634874225 is a wasteful number, since it uses less digits than its factorization.

634874225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25394979 (or 25394974 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

The square root of 634874225 is about 25196.7105988063. The cubic root of 634874225 is about 859.4670508119.

The spelling of 634874225 in words is "six hundred thirty-four million, eight hundred seventy-four thousand, two hundred twenty-five".