2278255681 has 8 divisors (see below), whose sum is σ = 2454217920. Its totient is φ = 2102395152.

The previous prime is 2278255643. The next prime is 2278255709. The reversal of 2278255681 is 1865528722.

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

It is not a de Polignac number, because 2278255681 - 2²³ = 2269867073 is a prime.

It is a super-2 number, since 2×2278255681² = 10380897896017547522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278255601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24786 + ... + 71908.

It is an arithmetic number, because the mean of its divisors is an integer number (306777240).

Almost surely, 2^2278255681 is an apocalyptic number.

It is an amenable number.

2278255681 is a deficient number, since it is larger than the sum of its proper divisors (175962239).

2278255681 is a wasteful number, since it uses less digits than its factorization.

2278255681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50855.

The product of its digits is 537600, while the sum is 46.

The square root of 2278255681 is about 47731.0766796644. The cubic root of 2278255681 is about 1315.8331414554.

The spelling of 2278255681 in words is "two billion, two hundred seventy-eight million, two hundred fifty-five thousand, six hundred eighty-one".