2165682250 has 16 divisors (see below), whose sum is σ = 4054157640. Its totient is φ = 866272800.

The previous prime is 2165682209. The next prime is 2165682287. The reversal of 2165682250 is 522865612.

It can be written as a sum of positive squares in 4 ways, for example, as 224310529 + 1941371721 = 14977^2 + 44061^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4331115 + ... + 4331614.

Almost surely, 2^2165682250 is an apocalyptic number.

2165682250 is a deficient number, since it is larger than the sum of its proper divisors (1888475390).

2165682250 is an equidigital number, since it uses as much as digits as its factorization.

2165682250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8662746 (or 8662736 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 2165682250 is about 46536.8912799297. The cubic root of 2165682250 is about 1293.7933433945.

The spelling of 2165682250 in words is "two billion, one hundred sixty-five million, six hundred eighty-two thousand, two hundred fifty".