13022225 has 6 divisors (see below), whose sum is σ = 16147590. Its totient is φ = 10417760.

The previous prime is 13022171. The next prime is 13022231. The reversal of 13022225 is 52222031.

It can be written as a sum of positive squares in 3 ways, for example, as 1577536 + 11444689 = 1256^2 + 3383^2 .

It is not a de Polignac number, because 13022225 - 2⁶ = 13022161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260420 + ... + 260469.

It is an arithmetic number, because the mean of its divisors is an integer number (2691265).

Almost surely, 2^13022225 is an apocalyptic number.

It is an amenable number.

13022225 is a deficient number, since it is larger than the sum of its proper divisors (3125365).

13022225 is an equidigital number, since it uses as much as digits as its factorization.

13022225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520899 (or 520894 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13022225 is about 3608.6320122728. The cubic root of 13022225 is about 235.2673884159.

Adding to 13022225 its reverse (52222031), we get a palindrome (65244256).

The spelling of 13022225 in words is "thirteen million, twenty-two thousand, two hundred twenty-five".