11718825 has 48 divisors (see below), whose sum is σ = 20582016. Its totient is φ = 5875200.

The previous prime is 11718823. The next prime is 11718827. The reversal of 11718825 is 52881711.

It is an interprime number because it is at equal distance from previous prime (11718823) and next prime (11718827).

It is not a de Polignac number, because 11718825 - 2¹ = 11718823 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11718821) 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 47 ways as a sum of consecutive naturals, for example, 113724 + ... + 113826.

It is an arithmetic number, because the mean of its divisors is an integer number (428792).

Almost surely, 2^11718825 is an apocalyptic number.

11718825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11718825 is a deficient number, since it is larger than the sum of its proper divisors (8863191).

11718825 is a wasteful number, since it uses less digits than its factorization.

11718825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 189 counting only the distinct ones).

The product of its digits is 4480, while the sum is 33.

The square root of 11718825 is about 3423.2769388409. The cubic root of 11718825 is about 227.1405586685.

The spelling of 11718825 in words is "eleven million, seven hundred eighteen thousand, eight hundred twenty-five".