2103661343225 has 12 divisors (see below), whose sum is σ = 2809196994156. Its totient is φ = 1553472991680.

The previous prime is 2103661343207. The next prime is 2103661343237. The reversal of 2103661343225 is 5223431663012.

It can be written as a sum of positive squares in 6 ways, for example, as 190560187024 + 1913101156201 = 436532^2 + 1383149^2 .

It is not a de Polignac number, because 2103661343225 - 2⁴⁰ = 1004149715449 is a prime.

It is a super-2 number, since 2×2103661343225² (a number of 25 digits) contains 22 as substring.

It is a Duffinian 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, 3236401742 + ... + 3236402391.

It is an arithmetic number, because the mean of its divisors is an integer number (234099749513).

Almost surely, 2^{2103661343225} is an apocalyptic number.

2103661343225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2103661343225 is a deficient number, since it is larger than the sum of its proper divisors (705535650931).

2103661343225 is a wasteful number, since it uses less digits than its factorization.

2103661343225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6472804156 (or 6472804151 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 2103661343225 in words is "two trillion, one hundred three billion, six hundred sixty-one million, three hundred forty-three thousand, two hundred twenty-five".