25164246139 has 2 divisors, whose sum is σ = 25164246140. Its totient is φ = 25164246138.

The previous prime is 25164246127. The next prime is 25164246167. The reversal of 25164246139 is 93164246152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25164246139 - 2¹⁹ = 25163721851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25164246095 and 25164246104.

It is not a weakly prime, because it can be changed into another prime (25164246169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12582123069 + 12582123070.

It is an arithmetic number, because the mean of its divisors is an integer number (12582123070).

Almost surely, 2^25164246139 is an apocalyptic number.

25164246139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25164246139 is an equidigital number, since it uses as much as digits as its factorization.

25164246139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The spelling of 25164246139 in words is "twenty-five billion, one hundred sixty-four million, two hundred forty-six thousand, one hundred thirty-nine".