25169554116 has 144 divisors (see below), whose sum is σ = 77010425856. Its totient is φ = 7038205344.

The previous prime is 25169554079. The next prime is 25169554159. The reversal of 25169554116 is 61145596152.

25169554116 is a `hidden beast` number, since 2 + 5 + 1 + 6 + 95 + 541 + 16 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280435 + ... + 359141.

It is an arithmetic number, because the mean of its divisors is an integer number (534794624).

Almost surely, 2^25169554116 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 25169554116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38505212928).

25169554116 is an abundant number, since it is smaller than the sum of its proper divisors (51840871740).

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

25169554116 is a wasteful number, since it uses less digits than its factorization.

25169554116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78780 (or 78766 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The spelling of 25169554116 in words is "twenty-five billion, one hundred sixty-nine million, five hundred fifty-four thousand, one hundred sixteen".