13851825 has 24 divisors (see below), whose sum is σ = 24665088. Its totient is φ = 6818880.

The previous prime is 13851797. The next prime is 13851833. The reversal of 13851825 is 52815831.

It is a happy number.

It is not a de Polignac number, because 13851825 - 2⁸ = 13851569 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6129 + ... + 8078.

It is an arithmetic number, because the mean of its divisors is an integer number (1027712).

Almost surely, 2^13851825 is an apocalyptic number.

13851825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13851825 is a deficient number, since it is larger than the sum of its proper divisors (10813263).

13851825 is a wasteful number, since it uses less digits than its factorization.

13851825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14233 (or 14228 counting only the distinct ones).

The product of its digits is 9600, while the sum is 33.

The square root of 13851825 is about 3721.8039980633. The cubic root of 13851825 is about 240.1609163894.

The spelling of 13851825 in words is "thirteen million, eight hundred fifty-one thousand, eight hundred twenty-five".