25188679125 has 24 divisors (see below), whose sum is σ = 45406794264. Its totient is φ = 13433961600.

The previous prime is 25188679099. The next prime is 25188679133. The reversal of 25188679125 is 52197688152.

It can be written as a sum of positive squares in 4 ways, for example, as 5047960401 + 20140718724 = 71049^2 + 141918^2 .

It is not a de Polignac number, because 25188679125 - 2⁷ = 25188678997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11193844 + ... + 11196093.

It is an arithmetic number, because the mean of its divisors is an integer number (1891949761).

Almost surely, 2^25188679125 is an apocalyptic number.

25188679125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25188679125 is a deficient number, since it is larger than the sum of its proper divisors (20218115139).

25188679125 is a wasteful number, since it uses less digits than its factorization.

25188679125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22389958 (or 22389945 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The spelling of 25188679125 in words is "twenty-five billion, one hundred eighty-eight million, six hundred seventy-nine thousand, one hundred twenty-five".