25957847 has 2 divisors, whose sum is σ = 25957848. Its totient is φ = 25957846.

The previous prime is 25957787. The next prime is 25957849. The reversal of 25957847 is 74875952.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25957847 - 2¹⁶ = 25892311 is a prime.

Together with 25957849, 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 (25957849) 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, 12978923 + 12978924.

It is an arithmetic number, because the mean of its divisors is an integer number (12978924).

Almost surely, 2^25957847 is an apocalyptic number.

25957847 is a deficient number, since it is larger than the sum of its proper divisors (1).

25957847 is an equidigital number, since it uses as much as digits as its factorization.

25957847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 47.

The square root of 25957847 is about 5094.8843951556. The cubic root of 25957847 is about 296.0894201169.

The spelling of 25957847 in words is "twenty-five million, nine hundred fifty-seven thousand, eight hundred forty-seven".