25886965 has 8 divisors (see below), whose sum is σ = 33454008. Its totient is φ = 19116480.

The previous prime is 25886947. The next prime is 25886969. The reversal of 25886965 is 56968852.

It can be written as a sum of positive squares in 4 ways, for example, as 6022116 + 19864849 = 2454^2 + 4457^2 .

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

It is not a de Polignac number, because 25886965 - 2⁹ = 25886453 is a prime.

It is a super-2 number, since 2×25886965² = 1340269913822450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25886969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199066 + ... + 199195.

It is an arithmetic number, because the mean of its divisors is an integer number (4181751).

Almost surely, 2^25886965 is an apocalyptic number.

It is an amenable number.

25886965 is a deficient number, since it is larger than the sum of its proper divisors (7567043).

25886965 is a wasteful number, since it uses less digits than its factorization.

25886965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398279.

The product of its digits is 1036800, while the sum is 49.

The square root of 25886965 is about 5087.9234467511. The cubic root of 25886965 is about 295.8196681294.

The spelling of 25886965 in words is "twenty-five million, eight hundred eighty-six thousand, nine hundred sixty-five".