22220125 has 8 divisors (see below), whose sum is σ = 27730872. Its totient is φ = 17776000.

The previous prime is 22220117. The next prime is 22220131. The reversal of 22220125 is 52102222.

It can be written as a sum of positive squares in 4 ways, for example, as 4605316 + 17614809 = 2146^2 + 4197^2 .

It is not a de Polignac number, because 22220125 - 2³ = 22220117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22220099 and 22220108.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 88756 + ... + 89005.

It is an arithmetic number, because the mean of its divisors is an integer number (3466359).

Almost surely, 2^22220125 is an apocalyptic number.

22220125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22220125 is a deficient number, since it is larger than the sum of its proper divisors (5510747).

22220125 is an equidigital number, since it uses as much as digits as its factorization.

22220125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177776 (or 177766 counting only the distinct ones).

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

The square root of 22220125 is about 4713.8227586535. The cubic root of 22220125 is about 281.1353771604.

Adding to 22220125 its reverse (52102222), we get a palindrome (74322347).

The spelling of 22220125 in words is "twenty-two million, two hundred twenty thousand, one hundred twenty-five".