11225509 has 2 divisors, whose sum is σ = 11225510. Its totient is φ = 11225508.

The previous prime is 11225507. The next prime is 11225531. The reversal of 11225509 is 90552211.

11225509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6140484 + 5085025 = 2478^2 + 2255^2 .

It is a cyclic number.

It is not a de Polignac number, because 11225509 - 2¹ = 11225507 is a prime.

Together with 11225507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11225507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5612754 + 5612755.

It is an arithmetic number, because the mean of its divisors is an integer number (5612755).

Almost surely, 2^11225509 is an apocalyptic number.

It is an amenable number.

11225509 is a deficient number, since it is larger than the sum of its proper divisors (1).

11225509 is an equidigital number, since it uses as much as digits as its factorization.

11225509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 11225509 is about 3350.4490743779. The cubic root of 11225509 is about 223.9075205513.

The spelling of 11225509 in words is "eleven million, two hundred twenty-five thousand, five hundred nine".