85255249 has 2 divisors, whose sum is σ = 85255250. Its totient is φ = 85255248.

The previous prime is 85255243. The next prime is 85255297. The reversal of 85255249 is 94255258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58629649 + 26625600 = 7657^2 + 5160^2 .

It is a cyclic number.

It is not a de Polignac number, because 85255249 - 2¹⁷ = 85124177 is a prime.

It is not a weakly prime, because it can be changed into another prime (85255243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42627624 + 42627625.

It is an arithmetic number, because the mean of its divisors is an integer number (42627625).

Almost surely, 2^85255249 is an apocalyptic number.

It is an amenable number.

85255249 is a deficient number, since it is larger than the sum of its proper divisors (1).

85255249 is an equidigital number, since it uses as much as digits as its factorization.

85255249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 40.

The square root of 85255249 is about 9233.3769012209. The cubic root of 85255249 is about 440.1226397119.

Subtracting 85255249 from its reverse (94255258), we obtain a palindrome (9000009).

The spelling of 85255249 in words is "eighty-five million, two hundred fifty-five thousand, two hundred forty-nine".