2250849281 has 4 divisors (see below), whose sum is σ = 2251044564. Its totient is φ = 2250654000.

The previous prime is 2250849259. The next prime is 2250849323. The reversal of 2250849281 is 1829480522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 394618225 + 1856231056 = 19865^2 + 43084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2250849281 is a prime.

It is a super-2 number, since 2×2250849281² = 10132644971556433922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2250849481) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 79190 + ... + 103791.

It is an arithmetic number, because the mean of its divisors is an integer number (562761141).

Almost surely, 2^2250849281 is an apocalyptic number.

It is an amenable number.

2250849281 is a deficient number, since it is larger than the sum of its proper divisors (195283).

2250849281 is a wasteful number, since it uses less digits than its factorization.

2250849281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195282.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 2250849281 is about 47443.1162656923. The cubic root of 2250849281 is about 1310.5355464295.

The spelling of 2250849281 in words is "two billion, two hundred fifty million, eight hundred forty-nine thousand, two hundred eighty-one".