4425209 has 4 divisors (see below), whose sum is σ = 4430160. Its totient is φ = 4420260.

The previous prime is 4425181. The next prime is 4425221. The reversal of 4425209 is 9025244.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4425209 - 2¹² = 4421113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4425229) 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, 719 + ... + 3060.

It is an arithmetic number, because the mean of its divisors is an integer number (1107540).

Almost surely, 2^4425209 is an apocalyptic number.

It is an amenable number.

4425209 is a deficient number, since it is larger than the sum of its proper divisors (4951).

4425209 is a wasteful number, since it uses less digits than its factorization.

4425209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4425209 is about 2103.6180737006. The cubic root of 4425209 is about 164.1766018478.

The spelling of 4425209 in words is "four million, four hundred twenty-five thousand, two hundred nine".