26082561 has 16 divisors (see below), whose sum is σ = 35481600. Its totient is φ = 17039568.

The previous prime is 26082557. The next prime is 26082577. The reversal of 26082561 is 16528062.

It is not a de Polignac number, because 26082561 - 2² = 26082557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26082541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39250 + ... + 39908.

It is an arithmetic number, because the mean of its divisors is an integer number (2217600).

Almost surely, 2^26082561 is an apocalyptic number.

It is an amenable number.

26082561 is a deficient number, since it is larger than the sum of its proper divisors (9399039).

26082561 is a wasteful number, since it uses less digits than its factorization.

26082561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 26082561 is about 5107.1088690178. The cubic root of 26082561 is about 296.5628481292.

The spelling of 26082561 in words is "twenty-six million, eighty-two thousand, five hundred sixty-one".