422018225 has 12 divisors (see below), whose sum is σ = 527126604. Its totient is φ = 335147520.

The previous prime is 422018173. The next prime is 422018257. The reversal of 422018225 is 522810224.

It can be written as a sum of positive squares in 6 ways, for example, as 32982049 + 389036176 = 5743^2 + 19724^2 .

It is not a de Polignac number, because 422018225 - 2⁶ = 422018161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422018194 and 422018203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58184 + ... + 65033.

It is an arithmetic number, because the mean of its divisors is an integer number (43927217).

Almost surely, 2^422018225 is an apocalyptic number.

It is an amenable number.

422018225 is a deficient number, since it is larger than the sum of its proper divisors (105108379).

422018225 is a wasteful number, since it uses less digits than its factorization.

422018225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123364 (or 123359 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 422018225 is about 20543.0821689444. The cubic root of 422018225 is about 750.0848644711.

Adding to 422018225 its reverse (522810224), we get a palindrome (944828449).

The spelling of 422018225 in words is "four hundred twenty-two million, eighteen thousand, two hundred twenty-five".