85999425420 has 48 divisors (see below), whose sum is σ = 244879729920. Its totient is φ = 22544481216.

The previous prime is 85999425409. The next prime is 85999425481. The reversal of 85999425420 is 2452499958.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12143272 + ... + 12150351.

It is an arithmetic number, because the mean of its divisors is an integer number (5101661040).

Almost surely, 2^85999425420 is an apocalyptic number.

It is an amenable number.

85999425420 is an abundant number, since it is smaller than the sum of its proper divisors (158880304500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85999425420 is a wasteful number, since it uses less digits than its factorization.

85999425420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24293694 (or 24293692 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 85999425420 in words is "eighty-five billion, nine hundred ninety-nine million, four hundred twenty-five thousand, four hundred twenty".