4220425 has 24 divisors (see below), whose sum is σ = 5803200. Its totient is φ = 3019200.

The previous prime is 4220423. The next prime is 4220441. The reversal of 4220425 is 5240224.

It is not a de Polignac number, because 4220425 - 2¹ = 4220423 is a prime.

It is a d-powerful number, because it can be written as 4⁴ + 2¹⁰ + 2¹³ + 0 + 4⁵ + 2²² + 5⁶ .

4220425 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4220423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28251 + ... + 28399.

It is an arithmetic number, because the mean of its divisors is an integer number (241800).

Almost surely, 2^4220425 is an apocalyptic number.

It is an amenable number.

4220425 is a deficient number, since it is larger than the sum of its proper divisors (1582775).

4220425 is a wasteful number, since it uses less digits than its factorization.

4220425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4220425 is about 2054.3672991946. The cubic root of 4220425 is about 161.6039836820.

Adding to 4220425 its reverse (5240224), we get a palindrome (9460649).

The spelling of 4220425 in words is "four million, two hundred twenty thousand, four hundred twenty-five".