285125856123 has 4 divisors (see below), whose sum is σ = 380167808168. Its totient is φ = 190083904080.

The previous prime is 285125856121. The next prime is 285125856137. The reversal of 285125856123 is 321658521582.

It is a happy number.

285125856123 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 285125856123 - 2¹ = 285125856121 is a prime.

It is a super-2 number, since 2×285125856123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285125856121) 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, 47520976018 + ... + 47520976023.

It is an arithmetic number, because the mean of its divisors is an integer number (95041952042).

Almost surely, 2^285125856123 is an apocalyptic number.

285125856123 is a deficient number, since it is larger than the sum of its proper divisors (95041952045).

285125856123 is an equidigital number, since it uses as much as digits as its factorization.

285125856123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95041952044.

The product of its digits is 1152000, while the sum is 48.

The spelling of 285125856123 in words is "two hundred eighty-five billion, one hundred twenty-five million, eight hundred fifty-six thousand, one hundred twenty-three".