25859443 has 2 divisors, whose sum is σ = 25859444. Its totient is φ = 25859442.

The previous prime is 25859441. The next prime is 25859459. The reversal of 25859443 is 34495852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25859443 - 2¹ = 25859441 is a prime.

Together with 25859441, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25859396 and 25859405.

It is not a weakly prime, because it can be changed into another prime (25859441) 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, 12929721 + 12929722.

It is an arithmetic number, because the mean of its divisors is an integer number (12929722).

Almost surely, 2^25859443 is an apocalyptic number.

25859443 is a deficient number, since it is larger than the sum of its proper divisors (1).

25859443 is an equidigital number, since it uses as much as digits as its factorization.

25859443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 40.

The square root of 25859443 is about 5085.2180877520. The cubic root of 25859443 is about 295.7147963549.

The spelling of 25859443 in words is "twenty-five million, eight hundred fifty-nine thousand, four hundred forty-three".