422031625 has 8 divisors (see below), whose sum is σ = 526695624. Its totient is φ = 337625200.

The previous prime is 422031619. The next prime is 422031637. The reversal of 422031625 is 526130224.

It can be written as a sum of positive squares in 4 ways, for example, as 45981961 + 376049664 = 6781^2 + 19392^2 .

It is not a de Polignac number, because 422031625 - 2¹⁹ = 421507337 is a prime.

It is a super-2 number, since 2×422031625² = 356221385000281250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 422031625.

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 7 ways as a sum of consecutive naturals, for example, 1688002 + ... + 1688251.

It is an arithmetic number, because the mean of its divisors is an integer number (65836953).

Almost surely, 2^422031625 is an apocalyptic number.

It is an amenable number.

422031625 is a deficient number, since it is larger than the sum of its proper divisors (104663999).

422031625 is an equidigital number, since it uses as much as digits as its factorization.

422031625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376268 (or 3376258 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 422031625 is about 20543.4083102099. The cubic root of 422031625 is about 750.0928033311.

Adding to 422031625 its reverse (526130224), we get a palindrome (948161849).

The spelling of 422031625 in words is "four hundred twenty-two million, thirty-one thousand, six hundred twenty-five".