26005505 has 4 divisors (see below), whose sum is σ = 31206612. Its totient is φ = 20804400.

The previous prime is 26005501. The next prime is 26005513. The reversal of 26005505 is 50550062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50550062 = 2 ⋅25275031.

It can be written as a sum of positive squares in 2 ways, for example, as 7789681 + 18215824 = 2791^2 + 4268^2 .

It is not a de Polignac number, because 26005505 - 2² = 26005501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26005501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2600546 + ... + 2600555.

It is an arithmetic number, because the mean of its divisors is an integer number (7801653).

Almost surely, 2^26005505 is an apocalyptic number.

It is an amenable number.

26005505 is a deficient number, since it is larger than the sum of its proper divisors (5201107).

26005505 is an equidigital number, since it uses as much as digits as its factorization.

26005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201106.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 26005505 is about 5099.5592946842. The cubic root of 26005505 is about 296.2705137510.

Adding to 26005505 its reverse (50550062), we get a palindrome (76555567).

The spelling of 26005505 in words is "twenty-six million, five thousand, five hundred five".