422565 has 32 divisors (see below), whose sum is σ = 798336. Its totient is φ = 188160.

The previous prime is 422563. The next prime is 422567. The reversal of 422565 is 565224.

It is an interprime number because it is at equal distance from previous prime (422563) and next prime (422567).

It is not a de Polignac number, because 422565 - 2¹ = 422563 is a prime.

It is a super-2 number, since 2×422565² = 357122358450, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2047 + ... + 2243.

It is an arithmetic number, because the mean of its divisors is an integer number (24948).

2⁴²²⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

422565 is a deficient number, since it is larger than the sum of its proper divisors (375771).

422565 is a wasteful number, since it uses less digits than its factorization.

422565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229.

The product of its digits is 2400, while the sum is 24.

The square root of 422565 is about 650.0499980771. The cubic root of 422565 is about 75.0408666171.

Adding to 422565 its reverse (565224), we get a palindrome (987789).

It can be divided in two parts, 4225 and 65, that multiplied together give a cube (274625 = 65³).

The spelling of 422565 in words is "four hundred twenty-two thousand, five hundred sixty-five".