13825843 has 4 divisors (see below), whose sum is σ = 13833520. Its totient is φ = 13818168.

The previous prime is 13825831. The next prime is 13825853. The reversal of 13825843 is 34852831.

It is a happy number.

13825843 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13825843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13825799 and 13825808.

It is not an unprimeable number, because it can be changed into a prime (13825813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493 + ... + 5281.

It is an arithmetic number, because the mean of its divisors is an integer number (3458380).

Almost surely, 2^13825843 is an apocalyptic number.

13825843 is a deficient number, since it is larger than the sum of its proper divisors (7677).

13825843 is an equidigital number, since it uses as much as digits as its factorization.

13825843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7676.

The product of its digits is 23040, while the sum is 34.

The square root of 13825843 is about 3718.3118481375. The cubic root of 13825843 is about 240.0106650353.

It can be divided in two parts, 1382 and 5843, that added together give a square (7225 = 85²).

The spelling of 13825843 in words is "thirteen million, eight hundred twenty-five thousand, eight hundred forty-three".