25368389 has 2 divisors, whose sum is σ = 25368390. Its totient is φ = 25368388.

The previous prime is 25368373. The next prime is 25368433. The reversal of 25368389 is 98386352.

It is an a-pointer prime, because the next prime (25368433) can be obtained adding 25368389 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24700900 + 667489 = 4970^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 25368389 - 2⁴ = 25368373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25368989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12684194 + 12684195.

It is an arithmetic number, because the mean of its divisors is an integer number (12684195).

Almost surely, 2^25368389 is an apocalyptic number.

It is an amenable number.

25368389 is a deficient number, since it is larger than the sum of its proper divisors (1).

25368389 is an equidigital number, since it uses as much as digits as its factorization.

25368389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The square root of 25368389 is about 5036.7041803147. The cubic root of 25368389 is about 293.8310110653.

The spelling of 25368389 in words is "twenty-five million, three hundred sixty-eight thousand, three hundred eighty-nine".