25866104035080 has 128 divisors (see below), whose sum is σ = 79761937898880. Its totient is φ = 6705615974400.

The previous prime is 25866104035049. The next prime is 25866104035099. The reversal of 25866104035080 is 8053040166852.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2907087 + ... + 7757793.

It is an arithmetic number, because the mean of its divisors is an integer number (623140139835).

Almost surely, 2^{25866104035080} is an apocalyptic number.

25866104035080 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 25866104035080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39880968949440).

25866104035080 is an abundant number, since it is smaller than the sum of its proper divisors (53895833863800).

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

25866104035080 is a wasteful number, since it uses less digits than its factorization.

25866104035080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851959 (or 4851955 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 25866104035080 in words is "twenty-five trillion, eight hundred sixty-six billion, one hundred four million, thirty-five thousand, eighty".