2105521325 has 12 divisors (see below), whose sum is σ = 2614029120. Its totient is φ = 1682363760.

The previous prime is 2105521303. The next prime is 2105521343. The reversal of 2105521325 is 5231255012.

It is not a de Polignac number, because 2105521325 - 2¹⁰ = 2105520301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2105521294 and 2105521303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30245 + ... + 71594.

It is an arithmetic number, because the mean of its divisors is an integer number (217835760).

Almost surely, 2^2105521325 is an apocalyptic number.

2105521325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2105521325 is a deficient number, since it is larger than the sum of its proper divisors (508507795).

2105521325 is a wasteful number, since it uses less digits than its factorization.

2105521325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102676 (or 102671 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2105521325 is about 45885.9599986750. The cubic root of 2105521325 is about 1281.7004834331.

Adding to 2105521325 its reverse (5231255012), we get a palindrome (7336776337).

The spelling of 2105521325 in words is "two billion, one hundred five million, five hundred twenty-one thousand, three hundred twenty-five".