25859217 has 8 divisors (see below), whose sum is σ = 34866720. Its totient is φ = 17045600.

The previous prime is 25859201. The next prime is 25859219. The reversal of 25859217 is 71295852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25859217 - 2⁴ = 25859201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25859219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48159 + ... + 48692.

It is an arithmetic number, because the mean of its divisors is an integer number (4358340).

Almost surely, 2^25859217 is an apocalyptic number.

It is an amenable number.

25859217 is a deficient number, since it is larger than the sum of its proper divisors (9007503).

25859217 is an equidigital number, since it uses as much as digits as its factorization.

25859217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96943.

The product of its digits is 50400, while the sum is 39.

The square root of 25859217 is about 5085.1958664343. The cubic root of 25859217 is about 295.7139348805.

The spelling of 25859217 in words is "twenty-five million, eight hundred fifty-nine thousand, two hundred seventeen".