2143543125 has 20 divisors (see below), whose sum is σ = 3571431776. Its totient is φ = 1143222000.

The previous prime is 2143543057. The next prime is 2143543169. The reversal of 2143543125 is 5213453412.

It is not a de Polignac number, because 2143543125 - 2¹¹ = 2143541077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143543092 and 2143543101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 569737 + ... + 573486.

Almost surely, 2^2143543125 is an apocalyptic number.

2143543125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143543125 is a deficient number, since it is larger than the sum of its proper divisors (1427888651).

2143543125 is an equidigital number, since it uses as much as digits as its factorization.

2143543125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143246 (or 1143231 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 2143543125 is about 46298.4138497206. The cubic root of 2143543125 is about 1289.3695465087.

Adding to 2143543125 its reverse (5213453412), we get a palindrome (7356996537).

The spelling of 2143543125 in words is "two billion, one hundred forty-three million, five hundred forty-three thousand, one hundred twenty-five".