25123404239 has 2 divisors, whose sum is σ = 25123404240. Its totient is φ = 25123404238.

The previous prime is 25123404221. The next prime is 25123404259. The reversal of 25123404239 is 93240432152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25123404239 - 2²⁰ = 25122355663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25123404199 and 25123404208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25123404209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12561702119 + 12561702120.

It is an arithmetic number, because the mean of its divisors is an integer number (12561702120).

Almost surely, 2^25123404239 is an apocalyptic number.

25123404239 is a deficient number, since it is larger than the sum of its proper divisors (1).

25123404239 is an equidigital number, since it uses as much as digits as its factorization.

25123404239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 25123404239 in words is "twenty-five billion, one hundred twenty-three million, four hundred four thousand, two hundred thirty-nine".