25956869 has 8 divisors (see below), whose sum is σ = 28062240. Its totient is φ = 23925456.

The previous prime is 25956863. The next prime is 25956881. The reversal of 25956869 is 96865952.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25956869 is a prime.

It is a super-2 number, since 2×25956869² = 1347518096566322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25956863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17759 + ... + 19164.

It is an arithmetic number, because the mean of its divisors is an integer number (3507780).

Almost surely, 2^25956869 is an apocalyptic number.

It is an amenable number.

25956869 is a deficient number, since it is larger than the sum of its proper divisors (2105371).

25956869 is a wasteful number, since it uses less digits than its factorization.

25956869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36979.

The product of its digits is 1166400, while the sum is 50.

The square root of 25956869 is about 5094.7884156263. The cubic root of 25956869 is about 296.0857015356.

The spelling of 25956869 in words is "twenty-five million, nine hundred fifty-six thousand, eight hundred sixty-nine".