2105525 has 6 divisors (see below), whose sum is σ = 2610882. Its totient is φ = 1684400.

The previous prime is 2105513. The next prime is 2105549. The reversal of 2105525 is 5255012.

It can be written as a sum of positive squares in 3 ways, for example, as 682276 + 1423249 = 826^2 + 1193^2 .

It is not a de Polignac number, because 2105525 - 2⁸ = 2105269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2105497 and 2105506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42086 + ... + 42135.

It is an arithmetic number, because the mean of its divisors is an integer number (435147).

2^2105525 is an apocalyptic number.

2105525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2105525 is a deficient number, since it is larger than the sum of its proper divisors (505357).

2105525 is an equidigital number, since it uses as much as digits as its factorization.

2105525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84231 (or 84226 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 2105525 is about 1451.0427285232. The cubic root of 2105525 is about 128.1701229131.

The spelling of 2105525 in words is "two million, one hundred five thousand, five hundred twenty-five".