25179881552 has 20 divisors (see below), whose sum is σ = 55755452256. Its totient is φ = 10791377760.

The previous prime is 25179881521. The next prime is 25179881579. The reversal of 25179881552 is 25518897152.

It is a junction number, because it is equal to n+sod(n) for n = 25179881494 and 25179881503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112410074 + ... + 112410297.

Almost surely, 2^25179881552 is an apocalyptic number.

It is an amenable number.

25179881552 is an abundant number, since it is smaller than the sum of its proper divisors (30575570704).

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

25179881552 is a wasteful number, since it uses less digits than its factorization.

25179881552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224820386 (or 224820380 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 53.

The spelling of 25179881552 in words is "twenty-five billion, one hundred seventy-nine million, eight hundred eighty-one thousand, five hundred fifty-two".