25115865 has 8 divisors (see below), whose sum is σ = 40185408. Its totient is φ = 13395120.

The previous prime is 25115843. The next prime is 25115873. The reversal of 25115865 is 56851152.

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

It is not a de Polignac number, because 25115865 - 2⁶ = 25115801 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 837181 + ... + 837210.

It is an arithmetic number, because the mean of its divisors is an integer number (5023176).

Almost surely, 2^25115865 is an apocalyptic number.

It is an amenable number.

25115865 is a deficient number, since it is larger than the sum of its proper divisors (15069543).

25115865 is a wasteful number, since it uses less digits than its factorization.

25115865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674399.

The product of its digits is 12000, while the sum is 33.

The square root of 25115865 is about 5011.5731063210. The cubic root of 25115865 is about 292.8527995163.

The spelling of 25115865 in words is "twenty-five million, one hundred fifteen thousand, eight hundred sixty-five".