225356772 has 12 divisors (see below), whose sum is σ = 525832496. Its totient is φ = 75118920.

The previous prime is 225356731. The next prime is 225356773. The reversal of 225356772 is 277653522.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 225356772.

It is not an unprimeable number, because it can be changed into a prime (225356773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9389854 + ... + 9389877.

Almost surely, 2^225356772 is an apocalyptic number.

It is an amenable number.

225356772 is an abundant number, since it is smaller than the sum of its proper divisors (300475724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225356772 is a wasteful number, since it uses less digits than its factorization.

225356772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18779738 (or 18779736 counting only the distinct ones).

The product of its digits is 176400, while the sum is 39.

The square root of 225356772 is about 15011.8876894280. The cubic root of 225356772 is about 608.5415052529.

It can be divided in two parts, 225356 and 772, that added together give a triangular number (226128 = T₆₇₂).

The spelling of 225356772 in words is "two hundred twenty-five million, three hundred fifty-six thousand, seven hundred seventy-two".