2125243447 has 4 divisors (see below), whose sum is σ = 2217645360. Its totient is φ = 2032841536.

The previous prime is 2125243433. The next prime is 2125243451. The reversal of 2125243447 is 7443425212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2125243447 - 2¹¹ = 2125241399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125243427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46200922 + ... + 46200967.

It is an arithmetic number, because the mean of its divisors is an integer number (554411340).

Almost surely, 2^2125243447 is an apocalyptic number.

2125243447 is a deficient number, since it is larger than the sum of its proper divisors (92401913).

2125243447 is an equidigital number, since it uses as much as digits as its factorization.

2125243447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92401912.

The product of its digits is 53760, while the sum is 34.

The square root of 2125243447 is about 46100.3627642994. The cubic root of 2125243447 is about 1285.6898892026.

Adding to 2125243447 its reverse (7443425212), we get a palindrome (9568668659).

The spelling of 2125243447 in words is "two billion, one hundred twenty-five million, two hundred forty-three thousand, four hundred forty-seven".