2855825785 has 8 divisors (see below), whose sum is σ = 3427824456. Its totient is φ = 2284104960.

The previous prime is 2855825729. The next prime is 2855825789. The reversal of 2855825785 is 5875285582.

2855825785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1653886224 + 1201939561 = 40668^2 + 34669^2 .

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

It is not a de Polignac number, because 2855825785 - 2¹⁷ = 2855694713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2855825789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46134 + ... + 88543.

It is an arithmetic number, because the mean of its divisors is an integer number (428478057).

Almost surely, 2^2855825785 is an apocalyptic number.

It is an amenable number.

2855825785 is a deficient number, since it is larger than the sum of its proper divisors (571998671).

2855825785 is a wasteful number, since it uses less digits than its factorization.

2855825785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138923.

The product of its digits is 8960000, while the sum is 55.

The square root of 2855825785 is about 53439.9268805637. The cubic root of 2855825785 is about 1418.7653397140.

The spelling of 2855825785 in words is "two billion, eight hundred fifty-five million, eight hundred twenty-five thousand, seven hundred eighty-five".