25864589 has 4 divisors (see below), whose sum is σ = 25877280. Its totient is φ = 25851900.

The previous prime is 25864577. The next prime is 25864609. The reversal of 25864589 is 98546852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25864589 - 2¹² = 25860493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25863589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519 + ... + 7620.

It is an arithmetic number, because the mean of its divisors is an integer number (6469320).

Almost surely, 2^25864589 is an apocalyptic number.

It is an amenable number.

25864589 is a deficient number, since it is larger than the sum of its proper divisors (12691).

25864589 is a wasteful number, since it uses less digits than its factorization.

25864589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12690.

The product of its digits is 691200, while the sum is 47.

The square root of 25864589 is about 5085.7240389152. The cubic root of 25864589 is about 295.7344106909.

The spelling of 25864589 in words is "twenty-five million, eight hundred sixty-four thousand, five hundred eighty-nine".