1669025133 has 12 divisors (see below), whose sum is σ = 2552626908. Its totient is φ = 1047231360.

The previous prime is 1669025069. The next prime is 1669025147. The reversal of 1669025133 is 3315209661.

It can be written as a sum of positive squares in 2 ways, for example, as 1115693604 + 553331529 = 33402^2 + 23523^2 .

It is not a de Polignac number, because 1669025133 - 2⁶ = 1669025069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669025233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5454178 + ... + 5454483.

It is an arithmetic number, because the mean of its divisors is an integer number (212718909).

Almost surely, 2^1669025133 is an apocalyptic number.

It is an amenable number.

1669025133 is a deficient number, since it is larger than the sum of its proper divisors (883601775).

1669025133 is a wasteful number, since it uses less digits than its factorization.

1669025133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10908684 (or 10908681 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1669025133 is about 40853.7040303569. The cubic root of 1669025133 is about 1186.1900921148.

The spelling of 1669025133 in words is "one billion, six hundred sixty-nine million, twenty-five thousand, one hundred thirty-three".