2100555525 has 48 divisors (see below), whose sum is σ = 3552772608. Its totient is φ = 1094808000.

The previous prime is 2100555511. The next prime is 2100555533. The reversal of 2100555525 is 5255550012.

It is not a de Polignac number, because 2100555525 - 2¹⁵ = 2100522757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100555492 and 2100555501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 656680 + ... + 659870.

It is an arithmetic number, because the mean of its divisors is an integer number (74016096).

Almost surely, 2^2100555525 is an apocalyptic number.

2100555525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2100555525 is a deficient number, since it is larger than the sum of its proper divisors (1452217083).

2100555525 is a wasteful number, since it uses less digits than its factorization.

2100555525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402 (or 3397 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 2100555525 is about 45831.8178234292. The cubic root of 2100555525 is about 1280.6920746732.

The spelling of 2100555525 in words is "two billion, one hundred million, five hundred fifty-five thousand, five hundred twenty-five".