1252133666785 has 8 divisors (see below), whose sum is σ = 1503107001000. Its totient is φ = 1001342532864.

The previous prime is 1252133666747. The next prime is 1252133666801. The reversal of 1252133666785 is 5876663312521.

It can be written as a sum of positive squares in 4 ways, for example, as 49968343296 + 1202165323489 = 223536^2 + 1096433^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252133666785 - 2²⁵ = 1252100112353 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45534952 + ... + 45562441.

It is an arithmetic number, because the mean of its divisors is an integer number (187888375125).

Almost surely, 2^{1252133666785} is an apocalyptic number.

It is an amenable number.

1252133666785 is a deficient number, since it is larger than the sum of its proper divisors (250973334215).

1252133666785 is an equidigital number, since it uses as much as digits as its factorization.

1252133666785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91100147.

The product of its digits is 10886400, while the sum is 55.

The spelling of 1252133666785 in words is "one trillion, two hundred fifty-two billion, one hundred thirty-three million, six hundred sixty-six thousand, seven hundred eighty-five".