85625420717 has 4 divisors (see below), whose sum is σ = 89348265120. Its totient is φ = 81902576316.

The previous prime is 85625420707. The next prime is 85625420773. The reversal of 85625420717 is 71702452658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85625420717 - 2¹⁸ = 85625158573 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 (85625420707) 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, 1861422167 + ... + 1861422212.

It is an arithmetic number, because the mean of its divisors is an integer number (22337066280).

Almost surely, 2^85625420717 is an apocalyptic number.

It is an amenable number.

85625420717 is a deficient number, since it is larger than the sum of its proper divisors (3722844403).

85625420717 is a wasteful number, since it uses less digits than its factorization.

85625420717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722844402.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 85625420717 in words is "eighty-five billion, six hundred twenty-five million, four hundred twenty thousand, seven hundred seventeen".