25992081 has 24 divisors (see below), whose sum is σ = 39262080. Its totient is φ = 16553376.

The previous prime is 25992059. The next prime is 25992089. The reversal of 25992081 is 18029952.

It is not a de Polignac number, because 25992081 - 2⁵ = 25992049 is a prime.

It is a super-2 number, since 2×25992081² = 1351176549421122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25992089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17475 + ... + 18903.

It is an arithmetic number, because the mean of its divisors is an integer number (1635920).

Almost surely, 2^25992081 is an apocalyptic number.

It is an amenable number.

25992081 is a deficient number, since it is larger than the sum of its proper divisors (13269999).

25992081 is a wasteful number, since it uses less digits than its factorization.

25992081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525 (or 1522 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 25992081 is about 5098.2429326190. The cubic root of 25992081 is about 296.2195268554.

The spelling of 25992081 in words is "twenty-five million, nine hundred ninety-two thousand, eighty-one".