25259861880 has 512 divisors, whose sum is σ = 95831424000. Its totient is φ = 5862205440.

The previous prime is 25259861867. The next prime is 25259861903. The reversal of 25259861880 is 8816895252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 54089407 + ... + 54089873.

It is an arithmetic number, because the mean of its divisors is an integer number (187170750).

Almost surely, 2^25259861880 is an apocalyptic number.

25259861880 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 25259861880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47915712000).

25259861880 is an abundant number, since it is smaller than the sum of its proper divisors (70571562120).

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

25259861880 is a wasteful number, since it uses less digits than its factorization.

25259861880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 25259861880 in words is "twenty-five billion, two hundred fifty-nine million, eight hundred sixty-one thousand, eight hundred eighty".