2143111325 has 12 divisors (see below), whose sum is σ = 2658127860. Its totient is φ = 1714056960.

The previous prime is 2143111283. The next prime is 2143111337. The reversal of 2143111325 is 5231113412.

It can be written as a sum of positive squares in 6 ways, for example, as 3308761 + 2139802564 = 1819^2 + 46258^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2143111325 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2143111325.

It is a congruent 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, 122741 + ... + 139109.

It is an arithmetic number, because the mean of its divisors is an integer number (221510655).

Almost surely, 2^2143111325 is an apocalyptic number.

2143111325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143111325 is a deficient number, since it is larger than the sum of its proper divisors (515016535).

2143111325 is a wasteful number, since it uses less digits than its factorization.

2143111325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21616 (or 21611 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 2143111325 is about 46293.7503881463. The cubic root of 2143111325 is about 1289.2829628905.

Adding to 2143111325 its reverse (5231113412), we get a palindrome (7374224737).

The spelling of 2143111325 in words is "two billion, one hundred forty-three million, one hundred eleven thousand, three hundred twenty-five".