15022225 has 6 divisors (see below), whose sum is σ = 18627590. Its totient is φ = 12017760.

The previous prime is 15022223. The next prime is 15022229. The reversal of 15022225 is 52222051.

It can be written as a sum of positive squares in 3 ways, for example, as 589824 + 14432401 = 768^2 + 3799^2 .

It is not a de Polignac number, because 15022225 - 2¹ = 15022223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15022223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300420 + ... + 300469.

Almost surely, 2^15022225 is an apocalyptic number.

It is an amenable number.

15022225 is a deficient number, since it is larger than the sum of its proper divisors (3605365).

15022225 is an equidigital number, since it uses as much as digits as its factorization.

15022225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600899 (or 600894 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 15022225 is about 3875.8515193438. The cubic root of 15022225 is about 246.7429507992.

Adding to 15022225 its reverse (52222051), we get a palindrome (67244276).

The spelling of 15022225 in words is "fifteen million, twenty-two thousand, two hundred twenty-five".