2255815867 has 4 divisors (see below), whose sum is σ = 2388510936. Its totient is φ = 2123120800.

The previous prime is 2255815811. The next prime is 2255815871. The reversal of 2255815867 is 7685185522.

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

It is a cyclic number.

It is not a de Polignac number, because 2255815867 - 2¹⁵ = 2255783099 is a prime.

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 2255815867.

It is not an unprimeable number, because it can be changed into a prime (2255813867) 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, 66347509 + ... + 66347542.

It is an arithmetic number, because the mean of its divisors is an integer number (597127734).

Almost surely, 2^2255815867 is an apocalyptic number.

2255815867 is a deficient number, since it is larger than the sum of its proper divisors (132695069).

2255815867 is a wasteful number, since it uses less digits than its factorization.

2255815867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132695068.

The product of its digits is 1344000, while the sum is 49.

The square root of 2255815867 is about 47495.4299591024. The cubic root of 2255815867 is about 1311.4987541162.

The spelling of 2255815867 in words is "two billion, two hundred fifty-five million, eight hundred fifteen thousand, eight hundred sixty-seven".