13838725 has 6 divisors (see below), whose sum is σ = 17160050. Its totient is φ = 11070960.

The previous prime is 13838723. The next prime is 13838743. The reversal of 13838725 is 52783831.

It can be written as a sum of positive squares in 3 ways, for example, as 1887876 + 11950849 = 1374^2 + 3457^2 .

It is not a de Polignac number, because 13838725 - 2¹ = 13838723 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13838723) 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, 276750 + ... + 276799.

Almost surely, 2^13838725 is an apocalyptic number.

It is an amenable number.

13838725 is a deficient number, since it is larger than the sum of its proper divisors (3321325).

13838725 is an equidigital number, since it uses as much as digits as its factorization.

13838725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553559 (or 553554 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 13838725 is about 3720.0436825392. The cubic root of 13838725 is about 240.0851838822.

The spelling of 13838725 in words is "thirteen million, eight hundred thirty-eight thousand, seven hundred twenty-five".