12765025139 has 4 divisors (see below), whose sum is σ = 13320026256. Its totient is φ = 12210024024.

The previous prime is 12765025081. The next prime is 12765025159. The reversal of 12765025139 is 93152056721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12765025139 - 2¹² = 12765021043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12765025096 and 12765025105.

It is not an unprimeable number, because it can be changed into a prime (12765025159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277500524 + ... + 277500569.

It is an arithmetic number, because the mean of its divisors is an integer number (3330006564).

Almost surely, 2^12765025139 is an apocalyptic number.

12765025139 is a deficient number, since it is larger than the sum of its proper divisors (555001117).

12765025139 is an equidigital number, since it uses as much as digits as its factorization.

12765025139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555001116.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 12765025139 in words is "twelve billion, seven hundred sixty-five million, twenty-five thousand, one hundred thirty-nine".