25860089 has 4 divisors (see below), whose sum is σ = 25924980. Its totient is φ = 25795200.

The previous prime is 25860049. The next prime is 25860091. The reversal of 25860089 is 98006852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22250089 + 3610000 = 4717^2 + 1900^2 .

It is a cyclic number.

It is not a de Polignac number, because 25860089 - 2¹² = 25855993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25860049) 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, 31844 + ... + 32645.

It is an arithmetic number, because the mean of its divisors is an integer number (6481245).

Almost surely, 2^25860089 is an apocalyptic number.

It is an amenable number.

25860089 is a deficient number, since it is larger than the sum of its proper divisors (64891).

25860089 is an equidigital number, since it uses as much as digits as its factorization.

25860089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64890.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 25860089 is about 5085.2816047885. The cubic root of 25860089 is about 295.7172587715.

The spelling of 25860089 in words is "twenty-five million, eight hundred sixty thousand, eighty-nine".