25938865 has 8 divisors (see below), whose sum is σ = 31201128. Its totient is φ = 20701440.

The previous prime is 25938853. The next prime is 25938881. The reversal of 25938865 is 56883952.

It can be written as a sum of positive squares in 4 ways, for example, as 3952144 + 21986721 = 1988^2 + 4689^2 .

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

It is not a de Polignac number, because 25938865 - 2¹⁹ = 25414577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3826 + ... + 8155.

It is an arithmetic number, because the mean of its divisors is an integer number (3900141).

Almost surely, 2^25938865 is an apocalyptic number.

It is an amenable number.

25938865 is a deficient number, since it is larger than the sum of its proper divisors (5262263).

25938865 is a wasteful number, since it uses less digits than its factorization.

25938865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12419.

The product of its digits is 518400, while the sum is 46.

The square root of 25938865 is about 5093.0212055321. The cubic root of 25938865 is about 296.0172294877.

The spelling of 25938865 in words is "twenty-five million, nine hundred thirty-eight thousand, eight hundred sixty-five".