2265778133 has 2 divisors, whose sum is σ = 2265778134. Its totient is φ = 2265778132.

The previous prime is 2265778111. The next prime is 2265778157. The reversal of 2265778133 is 3318775622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1816634884 + 449143249 = 42622^2 + 21193^2 .

It is a cyclic number.

It is not a de Polignac number, because 2265778133 - 2¹² = 2265774037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2265778433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1132889066 + 1132889067.

It is an arithmetic number, because the mean of its divisors is an integer number (1132889067).

Almost surely, 2^2265778133 is an apocalyptic number.

It is an amenable number.

2265778133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2265778133 is an equidigital number, since it uses as much as digits as its factorization.

2265778133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The square root of 2265778133 is about 47600.1904723080. The cubic root of 2265778133 is about 1313.4265581755.

The spelling of 2265778133 in words is "two billion, two hundred sixty-five million, seven hundred seventy-eight thousand, one hundred thirty-three".