13402225 has 12 divisors (see below), whose sum is σ = 16698460. Its totient is φ = 10670400.

The previous prime is 13402223. The next prime is 13402229. The reversal of 13402225 is 52220431.

It can be written as a sum of positive squares in 6 ways, for example, as 506944 + 12895281 = 712^2 + 3591^2 .

It is not a de Polignac number, because 13402225 - 2¹ = 13402223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13402223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4555 + ... + 6895.

Almost surely, 2^13402225 is an apocalyptic number.

It is an amenable number.

13402225 is a deficient number, since it is larger than the sum of its proper divisors (3296235).

13402225 is a wasteful number, since it uses less digits than its factorization.

13402225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580 (or 2575 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 13402225 is about 3660.9049427703. The cubic root of 13402225 is about 237.5339194398.

Adding to 13402225 its reverse (52220431), we get a palindrome (65622656).

The spelling of 13402225 in words is "thirteen million, four hundred two thousand, two hundred twenty-five".