85850825828 has 6 divisors (see below), whose sum is σ = 150238945206. Its totient is φ = 42925412912.

The previous prime is 85850825791. The next prime is 85850825887. The reversal of 85850825828 is 82852805858.

It can be written as a sum of positive squares in only one way, i.e., 43747068964 + 42103756864 = 209158^2 + 205192^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10731353225 + ... + 10731353232.

It is an arithmetic number, because the mean of its divisors is an integer number (25039824201).

Almost surely, 2^85850825828 is an apocalyptic number.

It is an amenable number.

85850825828 is a deficient number, since it is larger than the sum of its proper divisors (64388119378).

85850825828 is a wasteful number, since it uses less digits than its factorization.

85850825828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21462706461 (or 21462706459 counting only the distinct ones).

The product of its (nonzero) digits is 16384000, while the sum is 59.

The spelling of 85850825828 in words is "eighty-five billion, eight hundred fifty million, eight hundred twenty-five thousand, eight hundred twenty-eight".