25983681 has 16 divisors (see below), whose sum is σ = 36220800. Its totient is φ = 16547328.

The previous prime is 25983679. The next prime is 25983691. The reversal of 25983681 is 18638952.

It is not a de Polignac number, because 25983681 - 2¹ = 25983679 is a prime.

It is a super-2 number, since 2×25983681² = 1350303356619522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25983631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6900 + ... + 9978.

It is an arithmetic number, because the mean of its divisors is an integer number (2263800).

Almost surely, 2^25983681 is an apocalyptic number.

It is an amenable number.

25983681 is a deficient number, since it is larger than the sum of its proper divisors (10237119).

25983681 is a wasteful number, since it uses less digits than its factorization.

25983681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208.

The product of its digits is 103680, while the sum is 42.

The square root of 25983681 is about 5097.4190528149. The cubic root of 25983681 is about 296.1876131337.

The spelling of 25983681 in words is "twenty-five million, nine hundred eighty-three thousand, six hundred eighty-one".