13443725 has 6 divisors (see below), whose sum is σ = 16670250. Its totient is φ = 10754960.

The previous prime is 13443709. The next prime is 13443737. The reversal of 13443725 is 52734431.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 40804 + 13402921 = 202^2 + 3661^2 .

It is not a de Polignac number, because 13443725 - 2⁴ = 13443709 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 268850 + ... + 268899.

It is an arithmetic number, because the mean of its divisors is an integer number (2778375).

Almost surely, 2^13443725 is an apocalyptic number.

It is an amenable number.

13443725 is a deficient number, since it is larger than the sum of its proper divisors (3226525).

13443725 is an equidigital number, since it uses as much as digits as its factorization.

13443725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537759 (or 537754 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 13443725 is about 3666.5685592936. The cubic root of 13443725 is about 237.7788414677.

The spelling of 13443725 in words is "thirteen million, four hundred forty-three thousand, seven hundred twenty-five".