2001105525 has 24 divisors (see below), whose sum is σ = 3311886240. Its totient is φ = 1066162240.

The previous prime is 2001105503. The next prime is 2001105529. The reversal of 2001105525 is 5255011002.

It is not a de Polignac number, because 2001105525 - 2⁶ = 2001105461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001105529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62806 + ... + 89144.

It is an arithmetic number, because the mean of its divisors is an integer number (137995260).

Almost surely, 2^2001105525 is an apocalyptic number.

2001105525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2001105525 is a deficient number, since it is larger than the sum of its proper divisors (1310780715).

2001105525 is a wasteful number, since it uses less digits than its factorization.

2001105525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27365 (or 27360 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 2001105525 is about 44733.7179876656. The cubic root of 2001105525 is about 1260.1531528373.

Adding to 2001105525 its reverse (5255011002), we get a palindrome (7256116527).

The spelling of 2001105525 in words is "two billion, one million, one hundred five thousand, five hundred twenty-five".