11778125 has 12 divisors (see below), whose sum is σ = 14725620. Its totient is φ = 9420000.

The previous prime is 11778121. The next prime is 11778149. The reversal of 11778125 is 52187711.

It can be written as a sum of positive squares in 6 ways, for example, as 7912969 + 3865156 = 2813^2 + 1966^2 .

It is not a de Polignac number, because 11778125 - 2² = 11778121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11778091 and 11778100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11778121) 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, 1241 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (1227135).

Almost surely, 2^11778125 is an apocalyptic number.

It is an amenable number.

11778125 is a deficient number, since it is larger than the sum of its proper divisors (2947495).

11778125 is an frugal number, since it uses more digits than its factorization.

11778125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3794 (or 3774 counting only the distinct ones).

The product of its digits is 3920, while the sum is 32.

The square root of 11778125 is about 3431.9273010948. The cubic root of 11778125 is about 227.5230423869.

The spelling of 11778125 in words is "eleven million, seven hundred seventy-eight thousand, one hundred twenty-five".