85625958391 has 4 divisors (see below), whose sum is σ = 90132587800. Its totient is φ = 81119328984.

The previous prime is 85625958373. The next prime is 85625958401. The reversal of 85625958391 is 19385952658.

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

It is a cyclic number.

It is not a de Polignac number, because 85625958391 - 2¹¹ = 85625956343 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 (85625958361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253314676 + ... + 2253314713.

It is an arithmetic number, because the mean of its divisors is an integer number (22533146950).

Almost surely, 2^85625958391 is an apocalyptic number.

85625958391 is a deficient number, since it is larger than the sum of its proper divisors (4506629409).

85625958391 is a wasteful number, since it uses less digits than its factorization.

85625958391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506629408.

The product of its digits is 23328000, while the sum is 61.

The spelling of 85625958391 in words is "eighty-five billion, six hundred twenty-five million, nine hundred fifty-eight thousand, three hundred ninety-one".