25258217 has 8 divisors (see below), whose sum is σ = 26238600. Its totient is φ = 24285184.

The previous prime is 25258213. The next prime is 25258229. The reversal of 25258217 is 71285252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18826921 + 6431296 = 4339^2 + 2536^2 .

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 25258217 - 2² = 25258213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25258213) 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 in 7 ways as a sum of consecutive naturals, for example, 5759 + ... + 9147.

It is an arithmetic number, because the mean of its divisors is an integer number (3279825).

Almost surely, 2^25258217 is an apocalyptic number.

It is an amenable number.

25258217 is a deficient number, since it is larger than the sum of its proper divisors (980383).

25258217 is a wasteful number, since it uses less digits than its factorization.

25258217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3675.

The product of its digits is 11200, while the sum is 32.

The square root of 25258217 is about 5025.7553661116. The cubic root of 25258217 is about 293.4050357028.

The spelling of 25258217 in words is "twenty-five million, two hundred fifty-eight thousand, two hundred seventeen".