25610014660 has 12 divisors (see below), whose sum is σ = 53781030828. Its totient is φ = 10244005856.

The previous prime is 25610014543. The next prime is 25610014669. The reversal of 25610014660 is 6641001652.

It can be written as a sum of positive squares in 2 ways, for example, as 19230478276 + 6379536384 = 138674^2 + 79872^2 .

It is not an unprimeable number, because it can be changed into a prime (25610014669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640250347 + ... + 640250386.

It is an arithmetic number, because the mean of its divisors is an integer number (4481752569).

Almost surely, 2^25610014660 is an apocalyptic number.

25610014660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25610014660 is an abundant number, since it is smaller than the sum of its proper divisors (28171016168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25610014660 is a wasteful number, since it uses less digits than its factorization.

25610014660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280500742 (or 1280500740 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 25610014660 in words is "twenty-five billion, six hundred ten million, fourteen thousand, six hundred sixty".