225861552 has 60 divisors (see below), whose sum is σ = 722401680. Its totient is φ = 64531584.

The previous prime is 225861551. The next prime is 225861557. The reversal of 225861552 is 255168522.

It is a happy number.

225861552 is a `hidden beast` number, since 2 + 25 + 86 + 1 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (225861551) 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 11 ways as a sum of consecutive naturals, for example, 111027 + ... + 113042.

It is an arithmetic number, because the mean of its divisors is an integer number (12040028).

Almost surely, 2^225861552 is an apocalyptic number.

It is an amenable number.

225861552 is an abundant number, since it is smaller than the sum of its proper divisors (496540128).

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

225861552 is a wasteful number, since it uses less digits than its factorization.

225861552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224090 (or 224081 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 225861552 is about 15028.6909609586. The cubic root of 225861552 is about 608.9955268343.

The spelling of 225861552 in words is "two hundred twenty-five million, eight hundred sixty-one thousand, five hundred fifty-two".