31516606025 has 6 divisors (see below), whose sum is σ = 39080591502. Its totient is φ = 25213284800.

The previous prime is 31516606001. The next prime is 31516606091. The reversal of 31516606025 is 52060661513.

It can be written as a sum of positive squares in 3 ways, for example, as 211673401 + 31304932624 = 14549^2 + 176932^2 .

It is not a de Polignac number, because 31516606025 - 2²⁰ = 31515557449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 630332096 + ... + 630332145.

It is an arithmetic number, because the mean of its divisors is an integer number (6513431917).

Almost surely, 2^31516606025 is an apocalyptic number.

It is an amenable number.

31516606025 is a deficient number, since it is larger than the sum of its proper divisors (7563985477).

31516606025 is a wasteful number, since it uses less digits than its factorization.

31516606025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260664251 (or 1260664246 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 31516606025 in words is "thirty-one billion, five hundred sixteen million, six hundred six thousand, twenty-five".