85625221066 has 64 divisors (see below), whose sum is σ = 165661251840. Its totient is φ = 32224320000.

The previous prime is 85625221063. The next prime is 85625221069. The reversal of 85625221066 is 66012252658.

It is an interprime number because it is at equal distance from previous prime (85625221063) and next prime (85625221069).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (85625221063) 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 31 ways as a sum of consecutive naturals, for example, 570580 + ... + 704848.

It is an arithmetic number, because the mean of its divisors is an integer number (2588457060).

Almost surely, 2^85625221066 is an apocalyptic number.

85625221066 is a deficient number, since it is larger than the sum of its proper divisors (80036030774).

85625221066 is a wasteful number, since it uses less digits than its factorization.

85625221066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134431.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 85625221066 in words is "eighty-five billion, six hundred twenty-five million, two hundred twenty-one thousand, sixty-six".