25673865216 has 96 divisors (see below), whose sum is σ = 72049723200. Its totient is φ = 8107499520.

The previous prime is 25673865209. The next prime is 25673865229. The reversal of 25673865216 is 61256837652.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6771 + ... + 226701.

It is an arithmetic number, because the mean of its divisors is an integer number (750517950).

Almost surely, 2^25673865216 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 25673865216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36024861600).

25673865216 is an abundant number, since it is smaller than the sum of its proper divisors (46375857984).

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

25673865216 is a wasteful number, since it uses less digits than its factorization.

25673865216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219975 (or 219955 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 51.

The spelling of 25673865216 in words is "twenty-five billion, six hundred seventy-three million, eight hundred sixty-five thousand, two hundred sixteen".