422625 has 48 divisors (see below), whose sum is σ = 853632. Its totient is φ = 184800.

The previous prime is 422621. The next prime is 422627. The reversal of 422625 is 526224.

It is not a de Polignac number, because 422625 - 2² = 422621 is a prime.

It is a super-2 number, since 2×422625² = 357223781250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (422621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18364 + ... + 18386.

It is an arithmetic number, because the mean of its divisors is an integer number (17784).

2⁴²²⁶²⁵ is an apocalyptic number.

It is an amenable number.

422625 is an abundant number, since it is smaller than the sum of its proper divisors (431007).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422625 is a wasteful number, since it uses less digits than its factorization.

422625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55 (or 38 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 422625 is about 650.0961467352. The cubic root of 422625 is about 75.0444181330.

Adding to 422625 its reverse (526224), we get a palindrome (948849).

The spelling of 422625 in words is "four hundred twenty-two thousand, six hundred twenty-five".