4221420425 has 12 divisors (see below), whose sum is σ = 5312691216. Its totient is φ = 3326730000.

The previous prime is 4221420407. The next prime is 4221420431. The reversal of 4221420425 is 5240241224.

It is not a de Polignac number, because 4221420425 - 2¹⁰ = 4221419401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4221420394 and 4221420403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1258451 + ... + 1261800.

It is an arithmetic number, because the mean of its divisors is an integer number (442724268).

Almost surely, 2^4221420425 is an apocalyptic number.

It is an amenable number.

4221420425 is a deficient number, since it is larger than the sum of its proper divisors (1091270791).

4221420425 is a wasteful number, since it uses less digits than its factorization.

4221420425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520328 (or 2520323 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 4221420425 is about 64972.4589730141. The cubic root of 4221420425 is about 1616.1668793175.

Adding to 4221420425 its reverse (5240241224), we get a palindrome (9461661649).

The spelling of 4221420425 in words is "four billion, two hundred twenty-one million, four hundred twenty thousand, four hundred twenty-five".