85319825 has 6 divisors (see below), whose sum is σ = 105796614. Its totient is φ = 68255840.

The previous prime is 85319807. The next prime is 85319831. The reversal of 85319825 is 52891358.

It can be written as a sum of positive squares in 3 ways, for example, as 16129 + 85303696 = 127^2 + 9236^2 .

It is not a de Polignac number, because 85319825 - 2¹⁶ = 85254289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 1706372 + ... + 1706421.

It is an arithmetic number, because the mean of its divisors is an integer number (17632769).

Almost surely, 2^85319825 is an apocalyptic number.

It is an amenable number.

85319825 is a deficient number, since it is larger than the sum of its proper divisors (20476789).

85319825 is a wasteful number, since it uses less digits than its factorization.

85319825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412803 (or 3412798 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 85319825 is about 9236.8731181066. The cubic root of 85319825 is about 440.2337342861.

The spelling of 85319825 in words is "eighty-five million, three hundred nineteen thousand, eight hundred twenty-five".