2085255821 has 8 divisors (see below), whose sum is σ = 2313381600. Its totient is φ = 1863556240.

The previous prime is 2085255793. The next prime is 2085255863. The reversal of 2085255821 is 1285525802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2085255821 - 2²² = 2081061517 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 (2085255881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1605866 + ... + 1607163.

It is an arithmetic number, because the mean of its divisors is an integer number (289172700).

Almost surely, 2^2085255821 is an apocalyptic number.

It is an amenable number.

2085255821 is a deficient number, since it is larger than the sum of its proper divisors (228125779).

2085255821 is a wasteful number, since it uses less digits than its factorization.

2085255821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213099.

The product of its (nonzero) digits is 64000, while the sum is 38.

The square root of 2085255821 is about 45664.6013997714. The cubic root of 2085255821 is about 1277.5751253239.

The spelling of 2085255821 in words is "two billion, eighty-five million, two hundred fifty-five thousand, eight hundred twenty-one".