557668225 has 9 divisors (see below), whose sum is σ = 691655043. Its totient is φ = 446040120.

The previous prime is 557668213. The next prime is 557668249. The reversal of 557668225 is 522866755.

The square root of 557668225 is 23615.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 200760561 + 356907664 = 14169^2 + 18892^2 .

It is not a de Polignac number, because 557668225 - 2⁵ = 557668193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 115714 + ... + 120436.

Almost surely, 2^557668225 is an apocalyptic number.

557668225 is the 23615-th square number.

557668225 is the 11808-th centered octagonal number.

It is an amenable number.

557668225 is a deficient number, since it is larger than the sum of its proper divisors (133986818).

557668225 is an frugal number, since it uses more digits than its factorization.

557668225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456 (or 4728 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 46.

The cubic root of 557668225 is about 823.1114314910. Note that the first 3 decimals are identical.

The spelling of 557668225 in words is "five hundred fifty-seven million, six hundred sixty-eight thousand, two hundred twenty-five".