25859243 has 2 divisors, whose sum is σ = 25859244. Its totient is φ = 25859242.

The previous prime is 25859237. The next prime is 25859279. The reversal of 25859243 is 34295852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25859243 - 2⁶ = 25859179 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 25859197 and 25859206.

It is not a weakly prime, because it can be changed into another prime (25859443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12929621 + 12929622.

It is an arithmetic number, because the mean of its divisors is an integer number (12929622).

Almost surely, 2^25859243 is an apocalyptic number.

25859243 is a deficient number, since it is larger than the sum of its proper divisors (1).

25859243 is an equidigital number, since it uses as much as digits as its factorization.

25859243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 38.

The square root of 25859243 is about 5085.1984228740. The cubic root of 25859243 is about 295.7140339885.

The spelling of 25859243 in words is "twenty-five million, eight hundred fifty-nine thousand, two hundred forty-three".