422505 has 24 divisors (see below), whose sum is σ = 753480. Its totient is φ = 218880.

The previous prime is 422479. The next prime is 422537. The reversal of 422505 is 505224.

It can be written as a sum of positive squares in 4 ways, for example, as 36864 + 385641 = 192^2 + 621^2 .

It is not a de Polignac number, because 422505 - 2⁷ = 422377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1731 + ... + 1959.

It is an arithmetic number, because the mean of its divisors is an integer number (31395).

2⁴²²⁵⁰⁵ is an apocalyptic number.

422505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

422505 is a deficient number, since it is larger than the sum of its proper divisors (330975).

422505 is a wasteful number, since it uses less digits than its factorization.

422505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 422505 is about 650.0038461425. The cubic root of 422505 is about 75.0373147650.

Adding to 422505 its reverse (505224), we get a palindrome (927729).

The spelling of 422505 in words is "four hundred twenty-two thousand, five hundred five".