25492805760 has 128 divisors (see below), whose sum is σ = 81355363200. Its totient is φ = 6789963776.

The previous prime is 25492805669. The next prime is 25492805777. The reversal of 25492805760 is 6750829452.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1695556 + ... + 1710524.

It is an arithmetic number, because the mean of its divisors is an integer number (635588775).

Almost surely, 2^25492805760 is an apocalyptic number.

25492805760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25492805760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40677681600).

25492805760 is an abundant number, since it is smaller than the sum of its proper divisors (55862557440).

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

25492805760 is a wasteful number, since it uses less digits than its factorization.

25492805760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15878 (or 15866 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 25492805760 in words is "twenty-five billion, four hundred ninety-two million, eight hundred five thousand, seven hundred sixty".