25298551922 has 18 divisors (see below), whose sum is σ = 44146139247. Its totient is φ = 10841561724.

The previous prime is 25298551913. The next prime is 25298551979. The reversal of 25298551922 is 22915589252.

25298551922 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12649275961 + 12649275961 = 112469^2 + 112469^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=112469.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1566533 + ... + 1582599.

Almost surely, 2^25298551922 is an apocalyptic number.

25298551922 is a deficient number, since it is larger than the sum of its proper divisors (18847587325).

25298551922 is an frugal number, since it uses more digits than its factorization.

25298551922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32150 (or 16076 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 50.

Multiplying 25298551922 by its sum of digits (50), we get a square (1264927596100 = 1124690²).

The spelling of 25298551922 in words is "twenty-five billion, two hundred ninety-eight million, five hundred fifty-one thousand, nine hundred twenty-two".