25012765139 has 2 divisors, whose sum is σ = 25012765140. Its totient is φ = 25012765138.

The previous prime is 25012765117. The next prime is 25012765153. The reversal of 25012765139 is 93156721052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25012765139 - 2³² = 20717797843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25012765096 and 25012765105.

It is not a weakly prime, because it can be changed into another prime (25012465139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12506382569 + 12506382570.

It is an arithmetic number, because the mean of its divisors is an integer number (12506382570).

Almost surely, 2^25012765139 is an apocalyptic number.

25012765139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25012765139 is an equidigital number, since it uses as much as digits as its factorization.

25012765139 is an evil number, because the sum of its binary digits is even.

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

The spelling of 25012765139 in words is "twenty-five billion, twelve million, seven hundred sixty-five thousand, one hundred thirty-nine".