2103123425 has 24 divisors (see below), whose sum is σ = 2818595640. Its totient is φ = 1547481600.

The previous prime is 2103123419. The next prime is 2103123439. The reversal of 2103123425 is 5243213012.

It can be written as a sum of positive squares in 12 ways, for example, as 318229921 + 1784893504 = 17839^2 + 42248^2 .

It is not a de Polignac number, because 2103123425 - 2⁴ = 2103123409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2103123425.

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 23 ways as a sum of consecutive naturals, for example, 79811 + ... + 102839.

It is an arithmetic number, because the mean of its divisors is an integer number (117441485).

Almost surely, 2^2103123425 is an apocalyptic number.

2103123425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2103123425 is a deficient number, since it is larger than the sum of its proper divisors (715472215).

2103123425 is a wasteful number, since it uses less digits than its factorization.

2103123425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23333 (or 23328 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2103123425 is about 45859.8236477202. The cubic root of 2103123425 is about 1281.2137382559.

Adding to 2103123425 its reverse (5243213012), we get a palindrome (7346336437).

The spelling of 2103123425 in words is "two billion, one hundred three million, one hundred twenty-three thousand, four hundred twenty-five".