85578844443225 has 24 divisors (see below), whose sum is σ = 161703264168000. Its totient is φ = 39121757459520.

The previous prime is 85578844443221. The next prime is 85578844443247. The reversal of 85578844443225 is 52234444887558.

It is a happy number.

It is not a de Polignac number, because 85578844443225 - 2² = 85578844443221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85578844443225.

It is not an unprimeable number, because it can be changed into a prime (85578844443221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81503660850 + ... + 81503661899.

It is an arithmetic number, because the mean of its divisors is an integer number (6737636007000).

Almost surely, 2^{85578844443225} is an apocalyptic number.

It is an amenable number.

85578844443225 is a deficient number, since it is larger than the sum of its proper divisors (76124419724775).

85578844443225 is a wasteful number, since it uses less digits than its factorization.

85578844443225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163007322769 (or 163007322764 counting only the distinct ones).

The product of its digits is 1376256000, while the sum is 69.

The spelling of 85578844443225 in words is "eighty-five trillion, five hundred seventy-eight billion, eight hundred forty-four million, four hundred forty-three thousand, two hundred twenty-five".