2001225045 has 16 divisors (see below), whose sum is σ = 3202610112. Its totient is φ = 1067103360.

The previous prime is 2001225041. The next prime is 2001225049. The reversal of 2001225045 is 5405221002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2001225041) and next prime (2001225049).

It is not a de Polignac number, because 2001225045 - 2² = 2001225041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001225041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86790 + ... + 107400.

It is an arithmetic number, because the mean of its divisors is an integer number (200163132).

Almost surely, 2^2001225045 is an apocalyptic number.

It is an amenable number.

2001225045 is a deficient number, since it is larger than the sum of its proper divisors (1201385067).

2001225045 is a wasteful number, since it uses less digits than its factorization.

2001225045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27092.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2001225045 is about 44735.0538727741. The cubic root of 2001225045 is about 1260.1782407207.

Adding to 2001225045 its reverse (5405221002), we get a palindrome (7406446047).

The spelling of 2001225045 in words is "two billion, one million, two hundred twenty-five thousand, forty-five".