25660458880 has 64 divisors (see below), whose sum is σ = 70108051680. Its totient is φ = 8797870080.

The previous prime is 25660458877. The next prime is 25660458883. The reversal of 25660458880 is 8885406652.

It is an interprime number because it is at equal distance from previous prime (25660458877) and next prime (25660458883).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25660458883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2859411 + ... + 2868370.

Almost surely, 2^25660458880 is an apocalyptic number.

25660458880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25660458880 is an abundant number, since it is smaller than the sum of its proper divisors (44447592800).

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

25660458880 is an equidigital number, since it uses as much as digits as its factorization.

25660458880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5727807 (or 5727795 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 52.

The spelling of 25660458880 in words is "twenty-five billion, six hundred sixty million, four hundred fifty-eight thousand, eight hundred eighty".