25329278925 has 18 divisors (see below), whose sum is σ = 45367553322. Its totient is φ = 13508948640.

The previous prime is 25329278893. The next prime is 25329278927. The reversal of 25329278925 is 52987292352.

25329278925 is a `hidden beast` number, since 2 + 532 + 9 + 2 + 7 + 89 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 3912127209 + 21417151716 = 62547^2 + 146346^2 .

It is not a de Polignac number, because 25329278925 - 2⁵ = 25329278893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25329278927) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 56287062 + ... + 56287511.

It is an arithmetic number, because the mean of its divisors is an integer number (2520419629).

Almost surely, 2^25329278925 is an apocalyptic number.

25329278925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25329278925 is a deficient number, since it is larger than the sum of its proper divisors (20038274397).

25329278925 is a wasteful number, since it uses less digits than its factorization.

25329278925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112574589 (or 112574581 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 25329278925 in words is "twenty-five billion, three hundred twenty-nine million, two hundred seventy-eight thousand, nine hundred twenty-five".