25659873168 has 80 divisors (see below), whose sum is σ = 70310232000. Its totient is φ = 8036057088.

The previous prime is 25659873149. The next prime is 25659873259. The reversal of 25659873168 is 86137895652.

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 15 ways as a sum of consecutive naturals, for example, 443583 + ... + 498081.

It is an arithmetic number, because the mean of its divisors is an integer number (878877900).

Almost surely, 2^25659873168 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 25659873168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35155116000).

25659873168 is an abundant number, since it is smaller than the sum of its proper divisors (44650358832).

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

25659873168 is a wasteful number, since it uses less digits than its factorization.

25659873168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55104 (or 55098 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 60.

The spelling of 25659873168 in words is "twenty-five billion, six hundred fifty-nine million, eight hundred seventy-three thousand, one hundred sixty-eight".