25563299 has 2 divisors, whose sum is σ = 25563300. Its totient is φ = 25563298.

The previous prime is 25563277. The next prime is 25563301. The reversal of 25563299 is 99236552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25563299 - 2¹² = 25559203 is a prime.

Together with 25563301, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25563259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12781649 + 12781650.

It is an arithmetic number, because the mean of its divisors is an integer number (12781650).

Almost surely, 2^25563299 is an apocalyptic number.

25563299 is a deficient number, since it is larger than the sum of its proper divisors (1).

25563299 is an equidigital number, since it uses as much as digits as its factorization.

25563299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 41.

The square root of 25563299 is about 5056.0161194363. The cubic root of 25563299 is about 294.5816112410.

The spelling of 25563299 in words is "twenty-five million, five hundred sixty-three thousand, two hundred ninety-nine".