4225209 has 8 divisors (see below), whose sum is σ = 5646720. Its totient is φ = 2810256.

The previous prime is 4225189. The next prime is 4225211. The reversal of 4225209 is 9025224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-4225209 is a prime.

It is a Curzon number.

4225209 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4225219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144 + ... + 2910.

It is an arithmetic number, because the mean of its divisors is an integer number (705840).

Almost surely, 2^4225209 is an apocalyptic number.

It is an amenable number.

4225209 is a deficient number, since it is larger than the sum of its proper divisors (1421511).

4225209 is a wasteful number, since it uses less digits than its factorization.

4225209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 4225209 is about 2055.5313181754. The cubic root of 4225209 is about 161.6650218890.

The spelling of 4225209 in words is "four million, two hundred twenty-five thousand, two hundred nine".