25258399 has 2 divisors, whose sum is σ = 25258400. Its totient is φ = 25258398.

The previous prime is 25258367. The next prime is 25258403. The reversal of 25258399 is 99385252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25258399 - 2⁵ = 25258367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25258339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12629199 + 12629200.

It is an arithmetic number, because the mean of its divisors is an integer number (12629200).

Almost surely, 2^25258399 is an apocalyptic number.

25258399 is a deficient number, since it is larger than the sum of its proper divisors (1).

25258399 is an equidigital number, since it uses as much as digits as its factorization.

25258399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 43.

The square root of 25258399 is about 5025.7734728099. The cubic root of 25258399 is about 293.4057404186.

The spelling of 25258399 in words is "twenty-five million, two hundred fifty-eight thousand, three hundred ninety-nine".