22245385 has 4 divisors (see below), whose sum is σ = 26694468. Its totient is φ = 17796304.

The previous prime is 22245361. The next prime is 22245397. The reversal of 22245385 is 58354222.

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 3892729 + 18352656 = 1973^2 + 4284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22245385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224534 + ... + 2224543.

It is an arithmetic number, because the mean of its divisors is an integer number (6673617).

Almost surely, 2^22245385 is an apocalyptic number.

It is an amenable number.

22245385 is a deficient number, since it is larger than the sum of its proper divisors (4449083).

22245385 is an equidigital number, since it uses as much as digits as its factorization.

22245385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449082.

The product of its digits is 19200, while the sum is 31.

The square root of 22245385 is about 4716.5013516377. The cubic root of 22245385 is about 281.2418690653.

The spelling of 22245385 in words is "twenty-two million, two hundred forty-five thousand, three hundred eighty-five".