9285257321 has 2 divisors, whose sum is σ = 9285257322. Its totient is φ = 9285257320.

The previous prime is 9285257239. The next prime is 9285257327. The reversal of 9285257321 is 1237525829.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9255402025 + 29855296 = 96205^2 + 5464^2 .

It is a cyclic number.

It is not a de Polignac number, because 9285257321 - 2³⁰ = 8211515497 is a prime.

It is a super-3 number, since 3×9285257321³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (9285257327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4642628660 + 4642628661.

It is an arithmetic number, because the mean of its divisors is an integer number (4642628661).

Almost surely, 2^9285257321 is an apocalyptic number.

It is an amenable number.

9285257321 is a deficient number, since it is larger than the sum of its proper divisors (1).

9285257321 is an equidigital number, since it uses as much as digits as its factorization.

9285257321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 44.

The square root of 9285257321 is about 96360.0400632959. The cubic root of 9285257321 is about 2101.8319102579.

The spelling of 9285257321 in words is "nine billion, two hundred eighty-five million, two hundred fifty-seven thousand, three hundred twenty-one".