2001225876 has 48 divisors (see below), whose sum is σ = 5085259200. Its totient is φ = 608838912.

The previous prime is 2001225851. The next prime is 2001225911. The reversal of 2001225876 is 6785221002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58186 + ... + 85953.

It is an arithmetic number, because the mean of its divisors is an integer number (105942900).

Almost surely, 2^2001225876 is an apocalyptic number.

2001225876 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2001225876 is an abundant number, since it is smaller than the sum of its proper divisors (3084033324).

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

2001225876 is a wasteful number, since it uses less digits than its factorization.

2001225876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144248 (or 144246 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 2001225876 is about 44735.0631607914. The cubic root of 2001225876 is about 1260.1784151485.

Adding to 2001225876 its reverse (6785221002), we get a palindrome (8786446878).

The spelling of 2001225876 in words is "two billion, one million, two hundred twenty-five thousand, eight hundred seventy-six".