422508025 has 9 divisors (see below), whose sum is σ = 524037423. Its totient is φ = 337924200.

The previous prime is 422508001. The next prime is 422508077. The reversal of 422508025 is 520805224.

The square root of 422508025 is 20555.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 152102889 + 270405136 = 12333^2 + 16444^2 .

It is a de Polignac number, because none of the positive numbers 2^k-422508025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422507984 and 422508002.

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 8 ways as a sum of consecutive naturals, for example, 100720 + ... + 104830.

Almost surely, 2^422508025 is an apocalyptic number.

422508025 is the 20555-th square number.

422508025 is the 10278-th centered octagonal number.

It is an amenable number.

422508025 is a deficient number, since it is larger than the sum of its proper divisors (101529398).

422508025 is an frugal number, since it uses more digits than its factorization.

422508025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8232 (or 4116 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The cubic root of 422508025 is about 750.3749384562.

Multiplying 422508025 by its product of nonzero digits (6400), we get a square (2704051360000 = 1644400²).

The spelling of 422508025 in words is "four hundred twenty-two million, five hundred eight thousand, twenty-five".