13122225 has 18 divisors (see below), whose sum is σ = 23503766. Its totient is φ = 6998400.

The previous prime is 13122211. The next prime is 13122227. The reversal of 13122225 is 52222131.

It can be written as a sum of positive squares in 3 ways, for example, as 97344 + 13024881 = 312^2 + 3609^2 .

It is not a de Polignac number, because 13122225 - 2¹² = 13118129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13122198 and 13122207.

It is not an unprimeable number, because it can be changed into a prime (13122227) 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 17 ways as a sum of consecutive naturals, for example, 28936 + ... + 29385.

Almost surely, 2^13122225 is an apocalyptic number.

13122225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13122225 is a deficient number, since it is larger than the sum of its proper divisors (10381541).

13122225 is a wasteful number, since it uses less digits than its factorization.

13122225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58337 (or 58329 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 13122225 is about 3622.4611799162. The cubic root of 13122225 is about 235.8680735891.

Adding to 13122225 its reverse (52222131), we get a palindrome (65344356).

The spelling of 13122225 in words is "thirteen million, one hundred twenty-two thousand, two hundred twenty-five".