25998799 has 2 divisors, whose sum is σ = 25998800. Its totient is φ = 25998798.

The previous prime is 25998781. The next prime is 25998811. The reversal of 25998799 is 99789952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25998799 - 2⁵ = 25998767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25998199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12999399 + 12999400.

It is an arithmetic number, because the mean of its divisors is an integer number (12999400).

Almost surely, 2^25998799 is an apocalyptic number.

25998799 is a deficient number, since it is larger than the sum of its proper divisors (1).

25998799 is an equidigital number, since it uses as much as digits as its factorization.

25998799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 58.

The square root of 25998799 is about 5098.9017444936. The cubic root of 25998799 is about 296.2450452862.

The spelling of 25998799 in words is "twenty-five million, nine hundred ninety-eight thousand, seven hundred ninety-nine".