13725779 has 12 divisors (see below), whose sum is σ = 14826384. Its totient is φ = 12673584.

The previous prime is 13725769. The next prime is 13725841. The reversal of 13725779 is 97752731.

13725779 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13725779 - 2⁴ = 13725763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13725709) 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 11 ways as a sum of consecutive naturals, for example, 108014 + ... + 108140.

It is an arithmetic number, because the mean of its divisors is an integer number (1235532).

Almost surely, 2^13725779 is an apocalyptic number.

13725779 is a deficient number, since it is larger than the sum of its proper divisors (1100605).

13725779 is an equidigital number, since it uses as much as digits as its factorization.

13725779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 187 counting only the distinct ones).

The product of its digits is 92610, while the sum is 41.

The square root of 13725779 is about 3704.8318450370. The cubic root of 13725779 is about 239.4302398948.

The spelling of 13725779 in words is "thirteen million, seven hundred twenty-five thousand, seven hundred seventy-nine".