13199725 has 24 divisors (see below), whose sum is σ = 20409408. Its totient is φ = 8227200.

The previous prime is 13199689. The next prime is 13199741. The reversal of 13199725 is 52799131.

It is not a de Polignac number, because 13199725 - 2⁹ = 13199213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1504 + ... + 5353.

It is an arithmetic number, because the mean of its divisors is an integer number (850392).

Almost surely, 2^13199725 is an apocalyptic number.

It is an amenable number.

13199725 is a deficient number, since it is larger than the sum of its proper divisors (7209683).

13199725 is a wasteful number, since it uses less digits than its factorization.

13199725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6885 (or 6880 counting only the distinct ones).

The product of its digits is 17010, while the sum is 37.

The square root of 13199725 is about 3633.1425790904. The cubic root of 13199725 is about 236.3315088797.

It can be divided in two parts, 13199 and 725, that added together give a square (13924 = 118²).

The spelling of 13199725 in words is "thirteen million, one hundred ninety-nine thousand, seven hundred twenty-five".