25439627125 has 16 divisors (see below), whose sum is σ = 34634897856. Its totient is φ = 18501546000.

The previous prime is 25439627099. The next prime is 25439627159. The reversal of 25439627125 is 52172693452.

It is a de Polignac number, because none of the positive numbers 2^k-25439627125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9249399 + ... + 9252148.

It is an arithmetic number, because the mean of its divisors is an integer number (2164681116).

Almost surely, 2^25439627125 is an apocalyptic number.

25439627125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25439627125 is a deficient number, since it is larger than the sum of its proper divisors (9195270731).

25439627125 is a wasteful number, since it uses less digits than its factorization.

25439627125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18501573 (or 18501563 counting only the distinct ones).

The product of its digits is 907200, while the sum is 46.

The spelling of 25439627125 in words is "twenty-five billion, four hundred thirty-nine million, six hundred twenty-seven thousand, one hundred twenty-five".