2259782257 has 4 divisors (see below), whose sum is σ = 2276277156. Its totient is φ = 2243287360.

The previous prime is 2259782251. The next prime is 2259782267. The reversal of 2259782257 is 7522879522.

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 525143056 + 1734639201 = 22916^2 + 41649^2 .

It is a cyclic number.

It is not a de Polignac number, because 2259782257 - 2¹¹ = 2259780209 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2259782257.

It is not an unprimeable number, because it can be changed into a prime (2259782251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8247244 + ... + 8247517.

It is an arithmetic number, because the mean of its divisors is an integer number (569069289).

Almost surely, 2^2259782257 is an apocalyptic number.

It is an amenable number.

2259782257 is a deficient number, since it is larger than the sum of its proper divisors (16494899).

2259782257 is a wasteful number, since it uses less digits than its factorization.

2259782257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16494898.

The product of its digits is 1411200, while the sum is 49.

The square root of 2259782257 is about 47537.1671116401. The cubic root of 2259782257 is about 1312.2669713216.

The spelling of 2259782257 in words is "two billion, two hundred fifty-nine million, seven hundred eighty-two thousand, two hundred fifty-seven".