2001023225 has 12 divisors (see below), whose sum is σ = 2496131904. Its totient is φ = 1591229520.

The previous prime is 2001023203. The next prime is 2001023251. The reversal of 2001023225 is 5223201002.

It is not a de Polignac number, because 2001023225 - 2¹⁴ = 2001006841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 235469 + ... + 243818.

It is an arithmetic number, because the mean of its divisors is an integer number (208010992).

Almost surely, 2^2001023225 is an apocalyptic number.

2001023225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2001023225 is a deficient number, since it is larger than the sum of its proper divisors (495108679).

2001023225 is a wasteful number, since it uses less digits than its factorization.

2001023225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479464 (or 479459 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2001023225 is about 44732.7980904392. The cubic root of 2001023225 is about 1260.1358770490.

Adding to 2001023225 its reverse (5223201002), we get a palindrome (7224224227).

The spelling of 2001023225 in words is "two billion, one million, twenty-three thousand, two hundred twenty-five".