26042605 has 4 divisors (see below), whose sum is σ = 31251132. Its totient is φ = 20834080.

The previous prime is 26042593. The next prime is 26042633. The reversal of 26042605 is 50624062.

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 12981609 + 13060996 = 3603^2 + 3614^2 .

It is not a de Polignac number, because 26042605 - 2¹¹ = 26040557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26042605.

It is a congruent number.

It is an unprimeable number.

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, 2604256 + ... + 2604265.

It is an arithmetic number, because the mean of its divisors is an integer number (7812783).

Almost surely, 2^26042605 is an apocalyptic number.

It is an amenable number.

26042605 is a deficient number, since it is larger than the sum of its proper divisors (5208527).

26042605 is an equidigital number, since it uses as much as digits as its factorization.

26042605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5208526.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 26042605 is about 5103.1955674851. The cubic root of 26042605 is about 296.4113353864.

Adding to 26042605 its reverse (50624062), we get a palindrome (76666667).

The spelling of 26042605 in words is "twenty-six million, forty-two thousand, six hundred five".