13825243 has 2 divisors, whose sum is σ = 13825244. Its totient is φ = 13825242.

The previous prime is 13825213. The next prime is 13825247. The reversal of 13825243 is 34252831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13825243 is a prime.

It is a super-2 number, since 2×13825243² = 382274688018098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13825247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6912621 + 6912622.

It is an arithmetic number, because the mean of its divisors is an integer number (6912622).

Almost surely, 2^13825243 is an apocalyptic number.

13825243 is a deficient number, since it is larger than the sum of its proper divisors (1).

13825243 is an equidigital number, since it uses as much as digits as its factorization.

13825243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 28.

The square root of 13825243 is about 3718.2311654872. The cubic root of 13825243 is about 240.0071930715.

The spelling of 13825243 in words is "thirteen million, eight hundred twenty-five thousand, two hundred forty-three".