100022225 has 6 divisors (see below), whose sum is σ = 124027590. Its totient is φ = 80017760.

The previous prime is 100022201. The next prime is 100022227. The reversal of 100022225 is 522220001.

It can be written as a sum of positive squares in 3 ways, for example, as 8456464 + 91565761 = 2908^2 + 9569^2 .

It is a de Polignac number, because none of the positive numbers 2^k-100022225 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100022227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2000420 + ... + 2000469.

It is an arithmetic number, because the mean of its divisors is an integer number (20671265).

Almost surely, 2^100022225 is an apocalyptic number.

It is an amenable number.

100022225 is a deficient number, since it is larger than the sum of its proper divisors (24005365).

100022225 is an equidigital number, since it uses as much as digits as its factorization.

100022225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000899 (or 4000894 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 100022225 is about 10001.1111882630. Note that the first 4 decimals coincide. The cubic root of 100022225 is about 464.1932672514.

Adding to 100022225 its reverse (522220001), we get a palindrome (622242226).

The spelling of 100022225 in words is "one hundred million, twenty-two thousand, two hundred twenty-five".