2143122225 has 48 divisors (see below), whose sum is σ = 3699048960. Its totient is φ = 1093593600.

The previous prime is 2143122217. The next prime is 2143122239. The reversal of 2143122225 is 5222213412.

It is not a de Polignac number, because 2143122225 - 2³ = 2143122217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2143122195 and 2143122204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 201747 + ... + 212103.

It is an arithmetic number, because the mean of its divisors is an integer number (77063520).

Almost surely, 2^2143122225 is an apocalyptic number.

2143122225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143122225 is a deficient number, since it is larger than the sum of its proper divisors (1555926735).

2143122225 is a wasteful number, since it uses less digits than its factorization.

2143122225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10490 (or 10485 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 2143122225 is about 46293.8681144706. The cubic root of 2143122225 is about 1289.2851486784.

Adding to 2143122225 its reverse (5222213412), we get a palindrome (7365335637).

The spelling of 2143122225 in words is "two billion, one hundred forty-three million, one hundred twenty-two thousand, two hundred twenty-five".