422642425 has 12 divisors (see below), whose sum is σ = 524336976. Its totient is φ = 337946000.

The previous prime is 422642419. The next prime is 422642459. The reversal of 422642425 is 524246224.

It is not a de Polignac number, because 422642425 - 2³ = 422642417 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, 81150 + ... + 86200.

It is an arithmetic number, because the mean of its divisors is an integer number (43694748).

Almost surely, 2^422642425 is an apocalyptic number.

It is an amenable number.

422642425 is a deficient number, since it is larger than the sum of its proper divisors (101694551).

422642425 is a wasteful number, since it uses less digits than its factorization.

422642425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8408 (or 8403 counting only the distinct ones).

The product of its digits is 30720, while the sum is 31.

The square root of 422642425 is about 20558.2690175997. The cubic root of 422642425 is about 750.4544948939.

Adding to 422642425 its reverse (524246224), we get a palindrome (946888649).

The spelling of 422642425 in words is "four hundred twenty-two million, six hundred forty-two thousand, four hundred twenty-five".