31559283595225 has 9 divisors (see below), whose sum is σ = 39133546488253. Its totient is φ = 25247404405120.

The previous prime is 31559283595223. The next prime is 31559283595241. The reversal of 31559283595225 is 52259538295513.

The square root of 31559283595225 is 5617765.

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

It can be written as a sum of positive squares in 4 ways, for example, as 13725520811209 + 17833762784016 = 3704797^2 + 4223004^2 .

It is not a de Polignac number, because 31559283595225 - 2¹ = 31559283595223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31559283595223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27527049 + ... + 28650601.

Almost surely, 2^{31559283595225} is an apocalyptic number.

31559283595225 is the 5617765-th square number.

31559283595225 is the 2808883-rd centered octagonal number.

It is an amenable number.

31559283595225 is a deficient number, since it is larger than the sum of its proper divisors (7574262893028).

31559283595225 is an frugal number, since it uses more digits than its factorization.

31559283595225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247116 (or 1123558 counting only the distinct ones).

The product of its digits is 145800000, while the sum is 64.

The spelling of 31559283595225 in words is "thirty-one trillion, five hundred fifty-nine billion, two hundred eighty-three million, five hundred ninety-five thousand, two hundred twenty-five".