25879943 has 2 divisors, whose sum is σ = 25879944. Its totient is φ = 25879942.

The previous prime is 25879913. The next prime is 25879961. The reversal of 25879943 is 34997852.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25879943 - 2¹² = 25875847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25879913) 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, 12939971 + 12939972.

It is an arithmetic number, because the mean of its divisors is an integer number (12939972).

Almost surely, 2^25879943 is an apocalyptic number.

25879943 is a deficient number, since it is larger than the sum of its proper divisors (1).

25879943 is an equidigital number, since it uses as much as digits as its factorization.

25879943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 25879943 is about 5087.2333345346. The cubic root of 25879943 is about 295.7929180699.

The spelling of 25879943 in words is "twenty-five million, eight hundred seventy-nine thousand, nine hundred forty-three".