25598449139 has 2 divisors, whose sum is σ = 25598449140. Its totient is φ = 25598449138.

The previous prime is 25598449133. The next prime is 25598449169. The reversal of 25598449139 is 93194489552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25598449139 is a prime.

It is not a weakly prime, because it can be changed into another prime (25598449133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12799224569 + 12799224570.

It is an arithmetic number, because the mean of its divisors is an integer number (12799224570).

Almost surely, 2^25598449139 is an apocalyptic number.

25598449139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25598449139 is an equidigital number, since it uses as much as digits as its factorization.

25598449139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13996800, while the sum is 59.

The spelling of 25598449139 in words is "twenty-five billion, five hundred ninety-eight million, four hundred forty-nine thousand, one hundred thirty-nine".