2001252580 has 24 divisors (see below), whose sum is σ = 4449844728. Its totient is φ = 753412608.

The previous prime is 2001252557. The next prime is 2001252581. The reversal of 2001252580 is 852521002.

It can be written as a sum of positive squares in 4 ways, for example, as 559227904 + 1442024676 = 23648^2 + 37974^2 .

It is not an unprimeable number, because it can be changed into a prime (2001252581) 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, 2942679 + ... + 2943358.

It is an arithmetic number, because the mean of its divisors is an integer number (185410197).

Almost surely, 2^2001252580 is an apocalyptic number.

2001252580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001252580 is an abundant number, since it is smaller than the sum of its proper divisors (2448592148).

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

2001252580 is a wasteful number, since it uses less digits than its factorization.

2001252580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886063 (or 5886061 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2001252580 is about 44735.3616281349. The cubic root of 2001252580 is about 1260.1840203220.

Adding to 2001252580 its reverse (852521002), we get a palindrome (2853773582).

The spelling of 2001252580 in words is "two billion, one million, two hundred fifty-two thousand, five hundred eighty".