66025389133 has 12 divisors (see below), whose sum is σ = 73060451100. Its totient is φ = 59620225280.

The previous prime is 66025389113. The next prime is 66025389137. The reversal of 66025389133 is 33198352066.

It can be written as a sum of positive squares in 2 ways, for example, as 9451339524 + 56574049609 = 97218^2 + 237853^2 .

It is not a de Polignac number, because 66025389133 - 2³³ = 57435454541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66025389137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1813060 + ... + 1849117.

It is an arithmetic number, because the mean of its divisors is an integer number (6088370925).

Almost surely, 2^66025389133 is an apocalyptic number.

It is an amenable number.

66025389133 is a deficient number, since it is larger than the sum of its proper divisors (7035061967).

66025389133 is a wasteful number, since it uses less digits than its factorization.

66025389133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662348 (or 3662337 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 66025389133 in words is "sixty-six billion, twenty-five million, three hundred eighty-nine thousand, one hundred thirty-three".