26222881 has 2 divisors, whose sum is σ = 26222882. Its totient is φ = 26222880.

The previous prime is 26222849. The next prime is 26222909. The reversal of 26222881 is 18822262.

26222881 is nontrivially palindromic in base 8.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15880225 + 10342656 = 3985^2 + 3216^2 .

It is a cyclic number.

It is not a de Polignac number, because 26222881 - 2⁵ = 26222849 is a prime.

It is a super-2 number, since 2×26222881² = 1375278975880322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26222081) 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 as a sum of consecutive naturals, namely, 13111440 + 13111441.

It is an arithmetic number, because the mean of its divisors is an integer number (13111441).

Almost surely, 2^26222881 is an apocalyptic number.

It is an amenable number.

26222881 is a deficient number, since it is larger than the sum of its proper divisors (1).

26222881 is an equidigital number, since it uses as much as digits as its factorization.

26222881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6144, while the sum is 31.

The square root of 26222881 is about 5120.8281556795. The cubic root of 26222881 is about 297.0937174723.

The spelling of 26222881 in words is "twenty-six million, two hundred twenty-two thousand, eight hundred eighty-one".