85195325309 has 4 divisors (see below), whose sum is σ = 85560970716. Its totient is φ = 84829679904.

The previous prime is 85195325279. The next prime is 85195325311. The reversal of 85195325309 is 90352359158.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14412722809 + 70782602500 = 120053^2 + 266050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85195325309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85195325339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182822354 + ... + 182822819.

It is an arithmetic number, because the mean of its divisors is an integer number (21390242679).

Almost surely, 2^85195325309 is an apocalyptic number.

It is an amenable number.

85195325309 is a deficient number, since it is larger than the sum of its proper divisors (365645407).

85195325309 is a wasteful number, since it uses less digits than its factorization.

85195325309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365645406.

The product of its (nonzero) digits is 1458000, while the sum is 50.

The spelling of 85195325309 in words is "eighty-five billion, one hundred ninety-five million, three hundred twenty-five thousand, three hundred nine".