25886255728 has 80 divisors (see below), whose sum is σ = 53976679200. Its totient is φ = 11989693440.

The previous prime is 25886255711. The next prime is 25886255737. The reversal of 25886255728 is 82755268852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3204078 + ... + 3212146.

It is an arithmetic number, because the mean of its divisors is an integer number (674708490).

Almost surely, 2^25886255728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25886255728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26988339600).

25886255728 is an abundant number, since it is smaller than the sum of its proper divisors (28090423472).

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

25886255728 is a wasteful number, since it uses less digits than its factorization.

25886255728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8330 (or 8324 counting only the distinct ones).

The product of its digits is 21504000, while the sum is 58.

The spelling of 25886255728 in words is "twenty-five billion, eight hundred eighty-six million, two hundred fifty-five thousand, seven hundred twenty-eight".