85625249 has 2 divisors, whose sum is σ = 85625250. Its totient is φ = 85625248.

The previous prime is 85625237. The next prime is 85625299. The reversal of 85625249 is 94252658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55726225 + 29899024 = 7465^2 + 5468^2 .

It is a cyclic number.

It is not a de Polignac number, because 85625249 - 2⁴ = 85625233 is a prime.

It is a super-3 number, since 3×85625249³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (85625299) 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, 42812624 + 42812625.

It is an arithmetic number, because the mean of its divisors is an integer number (42812625).

Almost surely, 2^85625249 is an apocalyptic number.

It is an amenable number.

85625249 is a deficient number, since it is larger than the sum of its proper divisors (1).

85625249 is an equidigital number, since it uses as much as digits as its factorization.

85625249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 85625249 is about 9253.3912161974. The cubic root of 85625249 is about 440.7584182199.

The spelling of 85625249 in words is "eighty-five million, six hundred twenty-five thousand, two hundred forty-nine".