225154555 has 4 divisors (see below), whose sum is σ = 270185472. Its totient is φ = 180123640.

The previous prime is 225154537. The next prime is 225154571. The reversal of 225154555 is 555451522.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 225154555 - 2⁹ = 225154043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225154555.

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 3 ways as a sum of consecutive naturals, for example, 22515451 + ... + 22515460.

It is an arithmetic number, because the mean of its divisors is an integer number (67546368).

Almost surely, 2^225154555 is an apocalyptic number.

225154555 is a deficient number, since it is larger than the sum of its proper divisors (45030917).

225154555 is an equidigital number, since it uses as much as digits as its factorization.

225154555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45030916.

The product of its digits is 50000, while the sum is 34.

The square root of 225154555 is about 15005.1509489242. The cubic root of 225154555 is about 608.3594320864.

The spelling of 225154555 in words is "two hundred twenty-five million, one hundred fifty-four thousand, five hundred fifty-five".