25613652945 has 32 divisors (see below), whose sum is σ = 41718251520. Its totient is φ = 13416960960.

The previous prime is 25613652937. The next prime is 25613652997. The reversal of 25613652945 is 54925631652.

It is a happy number.

25613652945 is a nontrivial binomial coefficient, being equal to C(226335, 2).

It is not a de Polignac number, because 25613652945 - 2³ = 25613652937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25613652894 and 25613652903.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169752 + ... + 282918.

It is an arithmetic number, because the mean of its divisors is an integer number (1303695360).

Almost surely, 2^25613652945 is an apocalyptic number.

25613652945 is the 226334-th triangular number.

It is an amenable number.

25613652945 is a deficient number, since it is larger than the sum of its proper divisors (16104598575).

25613652945 is a wasteful number, since it uses less digits than its factorization.

25613652945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113445.

The product of its digits is 1944000, while the sum is 48.

The spelling of 25613652945 in words is "twenty-five billion, six hundred thirteen million, six hundred fifty-two thousand, nine hundred forty-five".