225611878 has 8 divisors (see below), whose sum is σ = 339311880. Its totient is φ = 112507920.

The previous prime is 225611863. The next prime is 225611887. The reversal of 225611878 is 878116522.

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

It is a self number, because there is not a number n which added to its sum of digits gives 225611878.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148063 + ... + 149578.

It is an arithmetic number, because the mean of its divisors is an integer number (42413985).

Almost surely, 2^225611878 is an apocalyptic number.

225611878 is a deficient number, since it is larger than the sum of its proper divisors (113700002).

225611878 is a wasteful number, since it uses less digits than its factorization.

225611878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298022.

The product of its digits is 53760, while the sum is 40.

The square root of 225611878 is about 15020.3820856861. The cubic root of 225611878 is about 608.7710435771.

The spelling of 225611878 in words is "two hundred twenty-five million, six hundred eleven thousand, eight hundred seventy-eight".