25988243 has 2 divisors, whose sum is σ = 25988244. Its totient is φ = 25988242.

The previous prime is 25988203. The next prime is 25988273. The reversal of 25988243 is 34288952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25988243 - 2⁸ = 25987987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25988243.

It is not a weakly prime, because it can be changed into another prime (25988203) 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, 12994121 + 12994122.

It is an arithmetic number, because the mean of its divisors is an integer number (12994122).

Almost surely, 2^25988243 is an apocalyptic number.

25988243 is a deficient number, since it is larger than the sum of its proper divisors (1).

25988243 is an equidigital number, since it uses as much as digits as its factorization.

25988243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 41.

The square root of 25988243 is about 5097.8665145333. The cubic root of 25988243 is about 296.2049461772.

The spelling of 25988243 in words is "twenty-five million, nine hundred eighty-eight thousand, two hundred forty-three".