85209875222 has 4 divisors (see below), whose sum is σ = 127814812836. Its totient is φ = 42604937610.

The previous prime is 85209875221. The next prime is 85209875287. The reversal of 85209875222 is 22257890258.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85209875221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21302468804 + ... + 21302468807.

It is an arithmetic number, because the mean of its divisors is an integer number (31953703209).

Almost surely, 2^85209875222 is an apocalyptic number.

85209875222 is a deficient number, since it is larger than the sum of its proper divisors (42604937614).

85209875222 is a wasteful number, since it uses less digits than its factorization.

85209875222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42604937613.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 85209875222 in words is "eighty-five billion, two hundred nine million, eight hundred seventy-five thousand, two hundred twenty-two".