25854081 has 16 divisors (see below), whose sum is σ = 37983168. Its totient is φ = 15512000.

The previous prime is 25854077. The next prime is 25854091. The reversal of 25854081 is 18045852.

It is a cyclic number.

It is not a de Polignac number, because 25854081 - 2² = 25854077 is a prime.

It is a super-2 number, since 2×25854081² = 1336867008709122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (25854091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546 + ... + 7211.

It is an arithmetic number, because the mean of its divisors is an integer number (2373948).

Almost surely, 2^25854081 is an apocalyptic number.

It is an amenable number.

25854081 is a deficient number, since it is larger than the sum of its proper divisors (12129087).

25854081 is a wasteful number, since it uses less digits than its factorization.

25854081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7872.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 25854081 is about 5084.6908460594. The cubic root of 25854081 is about 295.6943559514.

It can be divided in two parts, 2585 and 4081, that added together give a palindrome (6666).

The spelling of 25854081 in words is "twenty-five million, eight hundred fifty-four thousand, eighty-one".