25506054108 has 72 divisors (see below), whose sum is σ = 68327400960. Its totient is φ = 7994726400.

The previous prime is 25506054071. The next prime is 25506054127. The reversal of 25506054108 is 80145060552.

25506054108 is a `hidden beast` number, since 2 + 5 + 5 + 0 + 605 + 41 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 686308 + ... + 722516.

It is an arithmetic number, because the mean of its divisors is an integer number (948991680).

Almost surely, 2^25506054108 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 25506054108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34163700480).

25506054108 is an abundant number, since it is smaller than the sum of its proper divisors (42821346852).

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

25506054108 is a wasteful number, since it uses less digits than its factorization.

25506054108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37387 (or 37382 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 25506054108 in words is "twenty-five billion, five hundred six million, fifty-four thousand, one hundred eight".