25660116253650 has 48 divisors (see below), whose sum is σ = 63637971846624. Its totient is φ = 6842602663680.

The previous prime is 25660116253627. The next prime is 25660116253697. The reversal of 25660116253650 is 5635261106652.

It is a super-2 number, since 2×25660116253650² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25660116253650.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10002577 + ... + 12303323.

It is an arithmetic number, because the mean of its divisors is an integer number (1325791080138).

Almost surely, 2^{25660116253650} is an apocalyptic number.

25660116253650 is an abundant number, since it is smaller than the sum of its proper divisors (37977855592974).

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

25660116253650 is a wasteful number, since it uses less digits than its factorization.

25660116253650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375115 (or 2375110 counting only the distinct ones).

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

The spelling of 25660116253650 in words is "twenty-five trillion, six hundred sixty billion, one hundred sixteen million, two hundred fifty-three thousand, six hundred fifty".