25655877876 has 96 divisors (see below), whose sum is σ = 62830817280. Its totient is φ = 8137584000.

The previous prime is 25655877857. The next prime is 25655877881. The reversal of 25655877876 is 67877855652.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 6881925 + ... + 6885651.

It is an arithmetic number, because the mean of its divisors is an integer number (654487680).

Almost surely, 2^25655877876 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 25655877876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31415408640).

25655877876 is an abundant number, since it is smaller than the sum of its proper divisors (37174939404).

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

25655877876 is a wasteful number, since it uses less digits than its factorization.

25655877876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4045 (or 4043 counting only the distinct ones).

The product of its digits is 197568000, while the sum is 66.

The spelling of 25655877876 in words is "twenty-five billion, six hundred fifty-five million, eight hundred seventy-seven thousand, eight hundred seventy-six".