25988065 has 8 divisors (see below), whose sum is σ = 31323240. Its totient is φ = 20698752.

The previous prime is 25988051. The next prime is 25988099. The reversal of 25988065 is 56088952.

It can be written as a sum of positive squares in 4 ways, for example, as 1157776 + 24830289 = 1076^2 + 4983^2 .

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 25988065 - 2¹⁵ = 25955297 is a prime.

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, 10204 + ... + 12493.

It is an arithmetic number, because the mean of its divisors is an integer number (3915405).

Almost surely, 2^25988065 is an apocalyptic number.

It is an amenable number.

25988065 is a deficient number, since it is larger than the sum of its proper divisors (5335175).

25988065 is a wasteful number, since it uses less digits than its factorization.

25988065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22931.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 25988065 is about 5097.8490562197. The cubic root of 25988065 is about 296.2042699150.

The spelling of 25988065 in words is "twenty-five million, nine hundred eighty-eight thousand, sixty-five".