25885874872 has 64 divisors (see below), whose sum is σ = 57317268960. Its totient is φ = 10804838400.

The previous prime is 25885874869. The next prime is 25885874921. The reversal of 25885874872 is 27847858852.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162172 + ... + 279412.

Almost surely, 2^25885874872 is an apocalyptic number.

25885874872 is a gapful number since it is divisible by the number (22) 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 25885874872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28658634480).

25885874872 is an abundant number, since it is smaller than the sum of its proper divisors (31431394088).

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

25885874872 is a wasteful number, since it uses less digits than its factorization.

25885874872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117464 (or 117460 counting only the distinct ones).

The product of its digits is 80281600, while the sum is 64.

The spelling of 25885874872 in words is "twenty-five billion, eight hundred eighty-five million, eight hundred seventy-four thousand, eight hundred seventy-two".