13217825 has 12 divisors (see below), whose sum is σ = 17253360. Its totient is φ = 10017360.

The previous prime is 13217821. The next prime is 13217839. The reversal of 13217825 is 52871231.

It is not a de Polignac number, because 13217825 - 2² = 13217821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13217821) 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, 13439 + ... + 14388.

It is an arithmetic number, because the mean of its divisors is an integer number (1437780).

Almost surely, 2^13217825 is an apocalyptic number.

It is an amenable number.

13217825 is a deficient number, since it is larger than the sum of its proper divisors (4035535).

13217825 is a wasteful number, since it uses less digits than its factorization.

13217825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27856 (or 27851 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 13217825 is about 3635.6326822164. The cubic root of 13217825 is about 236.4394820027.

The spelling of 13217825 in words is "thirteen million, two hundred seventeen thousand, eight hundred twenty-five".