26005285 has 4 divisors (see below), whose sum is σ = 31206348. Its totient is φ = 20804224.

The previous prime is 26005283. The next prime is 26005289. The reversal of 26005285 is 58250062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5943844 + 20061441 = 2438^2 + 4479^2 .

It is a cyclic number.

It is not a de Polignac number, because 26005285 - 2¹ = 26005283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26005283) 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 3 ways as a sum of consecutive naturals, for example, 2600524 + ... + 2600533.

It is an arithmetic number, because the mean of its divisors is an integer number (7801587).

Almost surely, 2^26005285 is an apocalyptic number.

It is an amenable number.

26005285 is a deficient number, since it is larger than the sum of its proper divisors (5201063).

26005285 is an equidigital number, since it uses as much as digits as its factorization.

26005285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201062.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 26005285 is about 5099.5377241472. The cubic root of 26005285 is about 296.2696782907.

The spelling of 26005285 in words is "twenty-six million, five thousand, two hundred eighty-five".