13722725 has 6 divisors (see below), whose sum is σ = 17016210. Its totient is φ = 10978160.

The previous prime is 13722721. The next prime is 13722727. The reversal of 13722725 is 52722731.

13722725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 312481 + 13410244 = 559^2 + 3662^2 .

It is not a de Polignac number, because 13722725 - 2² = 13722721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13722721) 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 5 ways as a sum of consecutive naturals, for example, 274430 + ... + 274479.

It is an arithmetic number, because the mean of its divisors is an integer number (2836035).

Almost surely, 2^13722725 is an apocalyptic number.

It is an amenable number.

13722725 is a deficient number, since it is larger than the sum of its proper divisors (3293485).

13722725 is an equidigital number, since it uses as much as digits as its factorization.

13722725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548919 (or 548914 counting only the distinct ones).

The product of its digits is 5880, while the sum is 29.

The square root of 13722725 is about 3704.4196576522. The cubic root of 13722725 is about 239.4124807524.

The spelling of 13722725 in words is "thirteen million, seven hundred twenty-two thousand, seven hundred twenty-five".