25422050556 has 144 divisors (see below), whose sum is σ = 76347048960. Its totient is φ = 7245754560.

The previous prime is 25422050527. The next prime is 25422050569. The reversal of 25422050556 is 65505022452.

25422050556 is a `hidden beast` number, since 2 + 54 + 2 + 2 + 0 + 50 + 556 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25422050556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2928190 + ... + 2936858.

It is an arithmetic number, because the mean of its divisors is an integer number (530187840).

Almost surely, 2^25422050556 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 25422050556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38173524480).

25422050556 is an abundant number, since it is smaller than the sum of its proper divisors (50924998404).

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

25422050556 is a wasteful number, since it uses less digits than its factorization.

25422050556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9126 (or 9112 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 25422050556 in words is "twenty-five billion, four hundred twenty-two million, fifty thousand, five hundred fifty-six".