2001233525 has 6 divisors (see below), whose sum is σ = 2481529602. Its totient is φ = 1600986800.

The previous prime is 2001233497. The next prime is 2001233543. The reversal of 2001233525 is 5253321002.

It can be written as a sum of positive squares in 3 ways, for example, as 369639076 + 1631594449 = 19226^2 + 40393^2 .

It is not a de Polignac number, because 2001233525 - 2³⁰ = 927491701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001233525.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 40024646 + ... + 40024695.

It is an arithmetic number, because the mean of its divisors is an integer number (413588267).

Almost surely, 2^2001233525 is an apocalyptic number.

2001233525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2001233525 is a deficient number, since it is larger than the sum of its proper divisors (480296077).

2001233525 is an equidigital number, since it uses as much as digits as its factorization.

2001233525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80049351 (or 80049346 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2001233525 is about 44735.1486529329. The cubic root of 2001233525 is about 1260.1800206799.

Adding to 2001233525 its reverse (5253321002), we get a palindrome (7254554527).

The spelling of 2001233525 in words is "two billion, one million, two hundred thirty-three thousand, five hundred twenty-five".