25438277139 has 16 divisors (see below), whose sum is σ = 37010058624. Its totient is φ = 15413417600.

The previous prime is 25438277107. The next prime is 25438277149. The reversal of 25438277139 is 93177283452.

It is a cyclic number.

It is not a de Polignac number, because 25438277139 - 2⁵ = 25438277107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25438277091 and 25438277100.

It is not an unprimeable number, because it can be changed into a prime (25438277149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49072 + ... + 230834.

It is an arithmetic number, because the mean of its divisors is an integer number (2313128664).

Almost surely, 2^25438277139 is an apocalyptic number.

25438277139 is a deficient number, since it is larger than the sum of its proper divisors (11571781485).

25438277139 is a wasteful number, since it uses less digits than its factorization.

25438277139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186018.

The product of its digits is 2540160, while the sum is 51.

The spelling of 25438277139 in words is "twenty-five billion, four hundred thirty-eight million, two hundred seventy-seven thousand, one hundred thirty-nine".