225178550 has 12 divisors (see below), whose sum is σ = 418832196. Its totient is φ = 90071400.

The previous prime is 225178537. The next prime is 225178571. The reversal of 225178550 is 55871522.

It is a self number, because there is not a number n which added to its sum of digits gives 225178550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2251736 + ... + 2251835.

It is an arithmetic number, because the mean of its divisors is an integer number (34902683).

Almost surely, 2^225178550 is an apocalyptic number.

225178550 is a deficient number, since it is larger than the sum of its proper divisors (193653646).

225178550 is a wasteful number, since it uses less digits than its factorization.

225178550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503583 (or 4503578 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 225178550 is about 15005.9504863904. The cubic root of 225178550 is about 608.3810425250.

The spelling of 225178550 in words is "two hundred twenty-five million, one hundred seventy-eight thousand, five hundred fifty".