809025533 has 2 divisors, whose sum is σ = 809025534. Its totient is φ = 809025532.

The previous prime is 809025509. The next prime is 809025541. The reversal of 809025533 is 335520908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404935129 + 404090404 = 20123^2 + 20102^2 .

It is a cyclic number.

It is not a de Polignac number, because 809025533 - 2¹⁶ = 808959997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 809025493 and 809025502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809025583) 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, 404512766 + 404512767.

It is an arithmetic number, because the mean of its divisors is an integer number (404512767).

Almost surely, 2^809025533 is an apocalyptic number.

It is an amenable number.

809025533 is a deficient number, since it is larger than the sum of its proper divisors (1).

809025533 is an equidigital number, since it uses as much as digits as its factorization.

809025533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 809025533 is about 28443.3741493515. The cubic root of 809025533 is about 931.7957875167.

The spelling of 809025533 in words is "eight hundred nine million, twenty-five thousand, five hundred thirty-three".