25123404259 has 2 divisors, whose sum is σ = 25123404260. Its totient is φ = 25123404258.

The previous prime is 25123404239. The next prime is 25123404283. The reversal of 25123404259 is 95240432152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25123404259 - 2²⁷ = 24989186531 is a prime.

It is a super-2 number, since 2×25123404259² (a number of 22 digits) contains 22 as substring.

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, 12561702129 + 12561702130.

It is an arithmetic number, because the mean of its divisors is an integer number (12561702130).

Almost surely, 2^25123404259 is an apocalyptic number.

25123404259 is a deficient number, since it is larger than the sum of its proper divisors (1).

25123404259 is an equidigital number, since it uses as much as digits as its factorization.

25123404259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 25123404259 in words is "twenty-five billion, one hundred twenty-three million, four hundred four thousand, two hundred fifty-nine".