420002225 has 12 divisors (see below), whose sum is σ = 521488944. Its totient is φ = 335559120.

The previous prime is 420002213. The next prime is 420002267. The reversal of 420002225 is 522200024.

It is not a de Polignac number, because 420002225 - 2²⁰ = 418953649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9002 + ... + 30348.

It is an arithmetic number, because the mean of its divisors is an integer number (43457412).

Almost surely, 2^420002225 is an apocalyptic number.

It is an amenable number.

420002225 is a deficient number, since it is larger than the sum of its proper divisors (101486719).

420002225 is a wasteful number, since it uses less digits than its factorization.

420002225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22144 (or 22139 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 420002225 is about 20493.9558162889. The cubic root of 420002225 is about 748.8885611593. Note that the first 3 decimals are identical.

Adding to 420002225 its reverse (522200024), we get a palindrome (942202249).

The spelling of 420002225 in words is "four hundred twenty million, two thousand, two hundred twenty-five".