11878825 has 18 divisors (see below), whose sum is σ = 17136366. Its totient is φ = 8144640.

The previous prime is 11878759. The next prime is 11878829. The reversal of 11878825 is 52887811.

It can be written as a sum of positive squares in 3 ways, for example, as 17689 + 11861136 = 133^2 + 3444^2 .

It is not a de Polignac number, because 11878825 - 2⁷ = 11878697 is a prime.

It is a super-2 number, since 2×11878825² = 282212966761250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11878829) 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 17 ways as a sum of consecutive naturals, for example, 3624 + ... + 6073.

Almost surely, 2^11878825 is an apocalyptic number.

It is an amenable number.

11878825 is a deficient number, since it is larger than the sum of its proper divisors (5257541).

11878825 is an equidigital number, since it uses as much as digits as its factorization.

11878825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9721 (or 9709 counting only the distinct ones).

The product of its digits is 35840, while the sum is 40.

The square root of 11878825 is about 3446.5671326698. The cubic root of 11878825 is about 228.1696247223.

The spelling of 11878825 in words is "eleven million, eight hundred seventy-eight thousand, eight hundred twenty-five".