31395045625 has 10 divisors (see below), whose sum is σ = 39231249794. Its totient is φ = 25116036000.

The previous prime is 31395045623. The next prime is 31395045653. The reversal of 31395045625 is 52654059313.

It can be written as a sum of positive squares in 5 ways, for example, as 7729223056 + 23665822569 = 87916^2 + 153837^2 .

It is not a de Polignac number, because 31395045625 - 2¹ = 31395045623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31395045623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25115412 + ... + 25116661.

Almost surely, 2^31395045625 is an apocalyptic number.

It is an amenable number.

31395045625 is a deficient number, since it is larger than the sum of its proper divisors (7836204169).

31395045625 is an frugal number, since it uses more digits than its factorization.

31395045625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50232093 (or 50232078 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 31395045625 in words is "thirty-one billion, three hundred ninety-five million, forty-five thousand, six hundred twenty-five".