25459859 has 2 divisors, whose sum is σ = 25459860. Its totient is φ = 25459858.

The previous prime is 25459843. The next prime is 25459877. The reversal of 25459859 is 95895452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25459859 - 2⁴ = 25459843 is a prime.

It is not a weakly prime, because it can be changed into another prime (25459559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12729929 + 12729930.

It is an arithmetic number, because the mean of its divisors is an integer number (12729930).

Almost surely, 2^25459859 is an apocalyptic number.

25459859 is a deficient number, since it is larger than the sum of its proper divisors (1).

25459859 is an equidigital number, since it uses as much as digits as its factorization.

25459859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 47.

The square root of 25459859 is about 5045.7763525547. The cubic root of 25459859 is about 294.1837398660.

The spelling of 25459859 in words is "twenty-five million, four hundred fifty-nine thousand, eight hundred fifty-nine".