538631227225 has 81 divisors (see below), whose sum is σ = 841832530263. Its totient is φ = 340724442240.

The previous prime is 538631227213. The next prime is 538631227231. The reversal of 538631227225 is 522722136835.

The square root of 538631227225 is 733915.

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

It can be written as a sum of positive squares in 13 ways, for example, as 464879876041 + 73751351184 = 681821^2 + 271572^2 .

It is not a de Polignac number, because 538631227225 - 2⁷ = 538631227097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 333930519 + ... + 333932131.

Almost surely, 2^538631227225 is an apocalyptic number.

538631227225 is the 733915-th square number.

538631227225 is the 366958-th centered octagonal number.

It is an amenable number.

538631227225 is a deficient number, since it is larger than the sum of its proper divisors (303201303038).

538631227225 is an equidigital number, since it uses as much as digits as its factorization.

538631227225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276 (or 1638 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 46.

The spelling of 538631227225 in words is "five hundred thirty-eight billion, six hundred thirty-one million, two hundred twenty-seven thousand, two hundred twenty-five".