2125523205 has 24 divisors (see below), whose sum is σ = 3967644408. Its totient is φ = 1046411136.

The previous prime is 2125523171. The next prime is 2125523207. The reversal of 2125523205 is 5023255212.

2125523205 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 123676641 + 2001846564 = 11121^2 + 44742^2 .

It is not a de Polignac number, because 2125523205 - 2¹⁰ = 2125522181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125523207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1816102 + ... + 1817271.

It is an arithmetic number, because the mean of its divisors is an integer number (165318517).

Almost surely, 2^2125523205 is an apocalyptic number.

It is an amenable number.

2125523205 is a deficient number, since it is larger than the sum of its proper divisors (1842121203).

2125523205 is a wasteful number, since it uses less digits than its factorization.

2125523205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633397 (or 3633394 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2125523205 is about 46103.3968922031. The cubic root of 2125523205 is about 1285.7463009753.

Adding to 2125523205 its reverse (5023255212), we get a palindrome (7148778417).

The spelling of 2125523205 in words is "two billion, one hundred twenty-five million, five hundred twenty-three thousand, two hundred five".