2255678890 has 8 divisors (see below), whose sum is σ = 4060222020. Its totient is φ = 902271552.

The previous prime is 2255678869. The next prime is 2255678891. The reversal of 2255678890 is 988765522.

It can be written as a sum of positive squares in 2 ways, for example, as 2051274681 + 204404209 = 45291^2 + 14297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2255678890³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2255678891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112783935 + ... + 112783954.

Almost surely, 2^2255678890 is an apocalyptic number.

2255678890 is a deficient number, since it is larger than the sum of its proper divisors (1804543130).

2255678890 is a wasteful number, since it uses less digits than its factorization.

2255678890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225567896.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The square root of 2255678890 is about 47493.9879353166. The cubic root of 2255678890 is about 1311.4722080959.

The spelling of 2255678890 in words is "two billion, two hundred fifty-five million, six hundred seventy-eight thousand, eight hundred ninety".