225984555 has 12 divisors (see below), whose sum is σ = 391706640. Its totient is φ = 120525072.

The previous prime is 225984547. The next prime is 225984557. The reversal of 225984555 is 555489522.

225984555 is a `hidden beast` number, since 2 + 2 + 5 + 98 + 4 + 555 = 666.

It is not a de Polignac number, because 225984555 - 2³ = 225984547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 5021879 = 225984555 / (2 + 2 + 5 + 9 + 8 + 4 + 5 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 225984555.

It is not an unprimeable number, because it can be changed into a prime (225984557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2510895 + ... + 2510984.

It is an arithmetic number, because the mean of its divisors is an integer number (32642220).

Almost surely, 2^225984555 is an apocalyptic number.

225984555 is a deficient number, since it is larger than the sum of its proper divisors (165722085).

225984555 is a wasteful number, since it uses less digits than its factorization.

225984555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021890 (or 5021887 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 225984555 is about 15032.7826765373. The cubic root of 225984555 is about 609.1060586800.

The spelling of 225984555 in words is "two hundred twenty-five million, nine hundred eighty-four thousand, five hundred fifty-five".