2143340225 has 48 divisors (see below), whose sum is σ = 2950946544. Its totient is φ = 1534464000.

The previous prime is 2143340191. The next prime is 2143340257. The reversal of 2143340225 is 5220433412.

It can be written as a sum of positive squares in 24 ways, for example, as 2099197489 + 44142736 = 45817^2 + 6644^2 .

It is not a de Polignac number, because 2143340225 - 2¹⁰ = 2143339201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2143340194 and 2143340203.

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, 1446485 + ... + 1447965.

It is an arithmetic number, because the mean of its divisors is an integer number (61478053).

Almost surely, 2^2143340225 is an apocalyptic number.

2143340225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143340225 is a deficient number, since it is larger than the sum of its proper divisors (807606319).

2143340225 is a wasteful number, since it uses less digits than its factorization.

2143340225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 1633 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 2143340225 is about 46296.2225780895. Note that the first 3 decimals coincide. The cubic root of 2143340225 is about 1289.3288628803.

Adding to 2143340225 its reverse (5220433412), we get a palindrome (7363773637).

The spelling of 2143340225 in words is "two billion, one hundred forty-three million, three hundred forty thousand, two hundred twenty-five".