25939982725 has 6 divisors (see below), whose sum is σ = 32165578610. Its totient is φ = 20751986160.

The previous prime is 25939982711. The next prime is 25939982741. The reversal of 25939982725 is 52728993952.

It can be written as a sum of positive squares in 3 ways, for example, as 8214521956 + 17725460769 = 90634^2 + 133137^2 .

It is not a de Polignac number, because 25939982725 - 2²⁵ = 25906428293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 518799630 + ... + 518799679.

Almost surely, 2^25939982725 is an apocalyptic number.

25939982725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25939982725 is a deficient number, since it is larger than the sum of its proper divisors (6225595885).

25939982725 is a wasteful number, since it uses less digits than its factorization.

25939982725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037599319 (or 1037599314 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 61.

The spelling of 25939982725 in words is "twenty-five billion, nine hundred thirty-nine million, nine hundred eighty-two thousand, seven hundred twenty-five".