31418028925 has 6 divisors (see below), whose sum is σ = 38958355898. Its totient is φ = 25134423120.

The previous prime is 31418028923. The next prime is 31418028937. The reversal of 31418028925 is 52982081413.

It can be written as a sum of positive squares in 3 ways, for example, as 5180832484 + 26237196441 = 71978^2 + 161979^2 .

It is not a de Polignac number, because 31418028925 - 2¹ = 31418028923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31418028923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 628360554 + ... + 628360603.

Almost surely, 2^31418028925 is an apocalyptic number.

It is an amenable number.

31418028925 is a deficient number, since it is larger than the sum of its proper divisors (7540326973).

31418028925 is a wasteful number, since it uses less digits than its factorization.

31418028925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256721167 (or 1256721162 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 31418028925 in words is "thirty-one billion, four hundred eighteen million, twenty-eight thousand, nine hundred twenty-five".