25364399 has 2 divisors, whose sum is σ = 25364400. Its totient is φ = 25364398.

The previous prime is 25364393. The next prime is 25364401. The reversal of 25364399 is 99346352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25364399 - 2¹⁶ = 25298863 is a prime.

Together with 25364401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25364393) 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, 12682199 + 12682200.

It is an arithmetic number, because the mean of its divisors is an integer number (12682200).

Almost surely, 2^25364399 is an apocalyptic number.

25364399 is a deficient number, since it is larger than the sum of its proper divisors (1).

25364399 is an equidigital number, since it uses as much as digits as its factorization.

25364399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 41.

The square root of 25364399 is about 5036.3080723879. The cubic root of 25364399 is about 293.8156054463.

The spelling of 25364399 in words is "twenty-five million, three hundred sixty-four thousand, three hundred ninety-nine".