25641514045 has 12 divisors (see below), whose sum is σ = 35793460764. Its totient is φ = 17582752320.

The previous prime is 25641514039. The next prime is 25641514081. The reversal of 25641514045 is 54041514652.

It can be written as a sum of positive squares in 2 ways, for example, as 18142473636 + 7499040409 = 134694^2 + 86597^2 .

It is not a de Polignac number, because 25641514045 - 2³ = 25641514037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25641513995 and 25641514013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52329376 + ... + 52329865.

It is an arithmetic number, because the mean of its divisors is an integer number (2982788397).

Almost surely, 2^25641514045 is an apocalyptic number.

It is an amenable number.

25641514045 is a deficient number, since it is larger than the sum of its proper divisors (10151946719).

25641514045 is a wasteful number, since it uses less digits than its factorization.

25641514045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104659260 (or 104659253 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 25641514045 in words is "twenty-five billion, six hundred forty-one million, five hundred fourteen thousand, forty-five".