25165532313 has 6 divisors (see below), whose sum is σ = 36350213354. Its totient is φ = 16777021536.

The previous prime is 25165532309. The next prime is 25165532321. The reversal of 25165532313 is 31323556152.

25165532313 is a `hidden beast` number, since 2 + 51 + 65 + 532 + 3 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17284886784 + 7880645529 = 131472^2 + 88773^2 .

It is not a de Polignac number, because 25165532313 - 2² = 25165532309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25165532303) 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, 1398085120 + ... + 1398085137.

Almost surely, 2^25165532313 is an apocalyptic number.

It is an amenable number.

25165532313 is a deficient number, since it is larger than the sum of its proper divisors (11184681041).

25165532313 is a wasteful number, since it uses less digits than its factorization.

25165532313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796170263 (or 2796170260 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The spelling of 25165532313 in words is "twenty-five billion, one hundred sixty-five million, five hundred thirty-two thousand, three hundred thirteen".