1166178835225 has 12 divisors (see below), whose sum is σ = 1481331555900. Its totient is φ = 910188358400.

The previous prime is 1166178835183. The next prime is 1166178835253. The reversal of 1166178835225 is 5225388716611.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 174768310809 + 991410524416 = 418053^2 + 995696^2 .

It is not a de Polignac number, because 1166178835225 - 2⁷ = 1166178835097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 568866700 + ... + 568868749.

It is an arithmetic number, because the mean of its divisors is an integer number (123444296325).

Almost surely, 2^{1166178835225} is an apocalyptic number.

It is an amenable number.

1166178835225 is a deficient number, since it is larger than the sum of its proper divisors (315152720675).

1166178835225 is a wasteful number, since it uses less digits than its factorization.

1166178835225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137735500 (or 1137735495 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 55.

The spelling of 1166178835225 in words is "one trillion, one hundred sixty-six billion, one hundred seventy-eight million, eight hundred thirty-five thousand, two hundred twenty-five".