4321220225 has 24 divisors (see below), whose sum is σ = 6484013568. Its totient is φ = 2788819200.

The previous prime is 4321220219. The next prime is 4321220227. The reversal of 4321220225 is 5220221234.

It is not a de Polignac number, because 4321220225 - 2⁴ = 4321220209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4321220225.

It is not an unprimeable number, because it can be changed into a prime (4321220227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 723281 + ... + 729230.

It is an arithmetic number, because the mean of its divisors is an integer number (270167232).

Almost surely, 2^4321220225 is an apocalyptic number.

It is an amenable number.

4321220225 is a deficient number, since it is larger than the sum of its proper divisors (2162793343).

4321220225 is a wasteful number, since it uses less digits than its factorization.

4321220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452545 (or 1452540 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4321220225 is about 65735.9888113049. The cubic root of 4321220225 is about 1628.8038981250.

Adding to 4321220225 its reverse (5220221234), we get a palindrome (9541441459).

The spelling of 4321220225 in words is "four billion, three hundred twenty-one million, two hundred twenty thousand, two hundred twenty-five".