12422500 has 30 divisors (see below), whose sum is σ = 27170990. Its totient is φ = 4968000.

The previous prime is 12422471. The next prime is 12422533. The reversal of 12422500 is 522421.

It can be written as a sum of positive squares in 5 ways, for example, as 6843456 + 5579044 = 2616^2 + 2362^2 .

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 9 ways as a sum of consecutive naturals, for example, 16 + ... + 4984.

Almost surely, 2^12422500 is an apocalyptic number.

12422500 is a gapful number since it is divisible by the number (10) 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 12422500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13585495).

12422500 is an abundant number, since it is smaller than the sum of its proper divisors (14748490).

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

12422500 is an equidigital number, since it uses as much as digits as its factorization.

12422500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993 (or 4976 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 12422500 is about 3524.5567097154. The cubic root of 12422500 is about 231.5988161690.

Adding to 12422500 its reverse (522421), we get a palindrome (12944921).

The spelling of 12422500 in words is "twelve million, four hundred twenty-two thousand, five hundred".