13840825 has 12 divisors (see below), whose sum is σ = 17909568. Its totient is φ = 10590800.

The previous prime is 13840807. The next prime is 13840829. The reversal of 13840825 is 52804831.

It is not a de Polignac number, because 13840825 - 2¹⁷ = 13709753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13840829) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11461 + ... + 12610.

It is an arithmetic number, because the mean of its divisors is an integer number (1492464).

Almost surely, 2^13840825 is an apocalyptic number.

It is an amenable number.

13840825 is a deficient number, since it is larger than the sum of its proper divisors (4068743).

13840825 is a wasteful number, since it uses less digits than its factorization.

13840825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24104 (or 24099 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 13840825 is about 3720.3259265822. The cubic root of 13840825 is about 240.0973274235.

The spelling of 13840825 in words is "thirteen million, eight hundred forty thousand, eight hundred twenty-five".