22225009 has 4 divisors (see below), whose sum is σ = 22256640. Its totient is φ = 22193380.

The previous prime is 22224973. The next prime is 22225019. The reversal of 22225009 is 90052222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22225009 - 2⁹ = 22224497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22225019) 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, 14737 + ... + 16174.

It is an arithmetic number, because the mean of its divisors is an integer number (5564160).

Almost surely, 2^22225009 is an apocalyptic number.

It is an amenable number.

22225009 is a deficient number, since it is larger than the sum of its proper divisors (31631).

22225009 is an equidigital number, since it uses as much as digits as its factorization.

22225009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31630.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 22225009 is about 4714.3407810637. The cubic root of 22225009 is about 281.1559735731.

The spelling of 22225009 in words is "twenty-two million, two hundred twenty-five thousand, nine".