25285617 has 24 divisors (see below), whose sum is σ = 42598400. Its totient is φ = 14447160.

The previous prime is 25285597. The next prime is 25285619. The reversal of 25285617 is 71658252.

It is a happy number.

It is not a de Polignac number, because 25285617 - 2¹⁵ = 25252849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25285619) 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 in 23 ways as a sum of consecutive naturals, for example, 1009 + ... + 7182.

Almost surely, 2^25285617 is an apocalyptic number.

It is an amenable number.

25285617 is a deficient number, since it is larger than the sum of its proper divisors (17312783).

25285617 is an equidigital number, since it uses as much as digits as its factorization.

25285617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8218 (or 8201 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 25285617 is about 5028.4805856242. The cubic root of 25285617 is about 293.5110921825.

The spelling of 25285617 in words is "twenty-five million, two hundred eighty-five thousand, six hundred seventeen".