31362639025 has 9 divisors (see below), whose sum is σ = 38890770411. Its totient is φ = 25089402840.

The previous prime is 31362639001. The next prime is 31362639029. The reversal of 31362639025 is 52093626313.

The square root of 31362639025 is 177095.

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., 11290550049 + 20072088976 = 106257^2 + 141676^2 .

It is not a de Polignac number, because 31362639025 - 2¹⁹ = 31362114737 is a prime.

It is a super-2 number, since 2×31362639025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31362639029) 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, 867766 + ... + 903184.

Almost surely, 2^31362639025 is an apocalyptic number.

31362639025 is the 177095-th square number.

31362639025 is the 88548-th centered octagonal number.

It is an amenable number.

31362639025 is a deficient number, since it is larger than the sum of its proper divisors (7528131386).

31362639025 is an frugal number, since it uses more digits than its factorization.

31362639025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70848 (or 35424 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 40.

The spelling of 31362639025 in words is "thirty-one billion, three hundred sixty-two million, six hundred thirty-nine thousand, twenty-five".