255505878226 has 4 divisors (see below), whose sum is σ = 383258817342. Its totient is φ = 127752939112.

The previous prime is 255505878203. The next prime is 255505878227. The reversal of 255505878226 is 622878505552.

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

It can be written as a sum of positive squares in only one way, i.e., 237510997201 + 17994881025 = 487351^2 + 134145^2 .

It is not an unprimeable number, because it can be changed into a prime (255505878227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63876469555 + ... + 63876469558.

Almost surely, 2^255505878226 is an apocalyptic number.

255505878226 is a deficient number, since it is larger than the sum of its proper divisors (127752939116).

255505878226 is a wasteful number, since it uses less digits than its factorization.

255505878226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127752939115.

The product of its (nonzero) digits is 13440000, while the sum is 55.

The spelling of 255505878226 in words is "two hundred fifty-five billion, five hundred five million, eight hundred seventy-eight thousand, two hundred twenty-six".