225561552 has 80 divisors (see below), whose sum is σ = 612067968. Its totient is φ = 71441920.

The previous prime is 225561517. The next prime is 225561563. The reversal of 225561552 is 255165522.

225561552 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190402 + ... + 191582.

Almost surely, 2^225561552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225561552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306033984).

225561552 is an abundant number, since it is smaller than the sum of its proper divisors (386506416).

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

225561552 is a wasteful number, since it uses less digits than its factorization.

225561552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1382 counting only the distinct ones).

The product of its digits is 30000, while the sum is 33.

The square root of 225561552 is about 15018.7067352685. The cubic root of 225561552 is about 608.7257751422.

The spelling of 225561552 in words is "two hundred twenty-five million, five hundred sixty-one thousand, five hundred fifty-two".