222425209 has 4 divisors (see below), whose sum is σ = 222549840. Its totient is φ = 222300580.

The previous prime is 222425207. The next prime is 222425213. The reversal of 222425209 is 902524222.

222425209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222425209 - 2¹ = 222425207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222425207) 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, 59599 + ... + 63220.

It is an arithmetic number, because the mean of its divisors is an integer number (55637460).

Almost surely, 2^222425209 is an apocalyptic number.

It is an amenable number.

222425209 is a deficient number, since it is larger than the sum of its proper divisors (124631).

222425209 is a wasteful number, since it uses less digits than its factorization.

222425209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124630.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 222425209 is about 14913.9266794496. The cubic root of 222425209 is about 605.8912338789.

The spelling of 222425209 in words is "two hundred twenty-two million, four hundred twenty-five thousand, two hundred nine".