25856339 has 2 divisors, whose sum is σ = 25856340. Its totient is φ = 25856338.

The previous prime is 25856323. The next prime is 25856353. The reversal of 25856339 is 93365852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25856339 - 2⁴ = 25856323 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25856296 and 25856305.

It is not a weakly prime, because it can be changed into another prime (25856239) 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, 12928169 + 12928170.

It is an arithmetic number, because the mean of its divisors is an integer number (12928170).

Almost surely, 2^25856339 is an apocalyptic number.

25856339 is a deficient number, since it is larger than the sum of its proper divisors (1).

25856339 is an equidigital number, since it uses as much as digits as its factorization.

25856339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 41.

The square root of 25856339 is about 5084.9128802763. The cubic root of 25856339 is about 295.7029639853.

The spelling of 25856339 in words is "twenty-five million, eight hundred fifty-six thousand, three hundred thirty-nine".