422525000 has 48 divisors (see below), whose sum is σ = 990288180. Its totient is φ = 169000000.

The previous prime is 422524961. The next prime is 422525023. The reversal of 422525000 is 525224.

It can be written as a sum of positive squares in 6 ways, for example, as 386884 + 422138116 = 622^2 + 20546^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16550 + ... + 33450.

Almost surely, 2^422525000 is an apocalyptic number.

422525000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422525000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495144090).

422525000 is an abundant number, since it is smaller than the sum of its proper divisors (567763180).

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

422525000 is an equidigital number, since it uses as much as digits as its factorization.

422525000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16932 (or 16908 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 422525000 is about 20555.4129124180. The cubic root of 422525000 is about 750.3849875308.

The spelling of 422525000 in words is "four hundred twenty-two million, five hundred twenty-five thousand".