13385725 has 12 divisors (see below), whose sum is σ = 16645140. Its totient is φ = 10678400.

The previous prime is 13385699. The next prime is 13385731. The reversal of 13385725 is 52758331.

It can be written as a sum of positive squares in 6 ways, for example, as 917764 + 12467961 = 958^2 + 3531^2 .

It is not a de Polignac number, because 13385725 - 2⁹ = 13385213 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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13755 + ... + 14695.

It is an arithmetic number, because the mean of its divisors is an integer number (1387095).

Almost surely, 2^13385725 is an apocalyptic number.

It is an amenable number.

13385725 is a deficient number, since it is larger than the sum of its proper divisors (3259415).

13385725 is an equidigital number, since it uses as much as digits as its factorization.

13385725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520 (or 1515 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 13385725 is about 3658.6507075697. The cubic root of 13385725 is about 237.4364003295.

It can be divided in two parts, 133 and 85725, that added together give a palindrome (85858).

The spelling of 13385725 in words is "thirteen million, three hundred eighty-five thousand, seven hundred twenty-five".