2565730733 has 2 divisors, whose sum is σ = 2565730734. Its totient is φ = 2565730732.

The previous prime is 2565730723. The next prime is 2565730757. The reversal of 2565730733 is 3370375652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1536796804 + 1028933929 = 39202^2 + 32077^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565730733 - 2¹² = 2565726637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565730723) 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 as a sum of consecutive naturals, namely, 1282865366 + 1282865367.

It is an arithmetic number, because the mean of its divisors is an integer number (1282865367).

Almost surely, 2^2565730733 is an apocalyptic number.

It is an amenable number.

2565730733 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565730733 is an equidigital number, since it uses as much as digits as its factorization.

2565730733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 41.

The square root of 2565730733 is about 50653.0426825477. The cubic root of 2565730733 is about 1369.0007690548. Note that the first 3 decimals are identical.

The spelling of 2565730733 in words is "two billion, five hundred sixty-five million, seven hundred thirty thousand, seven hundred thirty-three".