31445345025 has 18 divisors (see below), whose sum is σ = 56322107270. Its totient is φ = 16770850560.

The previous prime is 31445345017. The next prime is 31445345027. The reversal of 31445345025 is 52054354413.

31445345025 is a `hidden beast` number, since 3 + 144 + 5 + 3 + 4 + 502 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 10459766529 + 20985578496 = 102273^2 + 144864^2 .

It is not a de Polignac number, because 31445345025 - 2³ = 31445345017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31445345027) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 69878320 + ... + 69878769.

Almost surely, 2^31445345025 is an apocalyptic number.

It is an amenable number.

31445345025 is a deficient number, since it is larger than the sum of its proper divisors (24876762245).

31445345025 is a wasteful number, since it uses less digits than its factorization.

31445345025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139757105 (or 139757097 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 31445345025 its reverse (52054354413), we get a palindrome (83499699438).

The spelling of 31445345025 in words is "thirty-one billion, four hundred forty-five million, three hundred forty-five thousand, twenty-five".