225547899 has 4 divisors (see below), whose sum is σ = 300730536. Its totient is φ = 150365264.

The previous prime is 225547873. The next prime is 225547919. The reversal of 225547899 is 998745522.

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

It is a cyclic number.

It is not a de Polignac number, because 225547899 - 2¹⁷ = 225416827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225547849) 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, 37591314 + ... + 37591319.

It is an arithmetic number, because the mean of its divisors is an integer number (75182634).

Almost surely, 2^225547899 is an apocalyptic number.

225547899 is a deficient number, since it is larger than the sum of its proper divisors (75182637).

225547899 is an equidigital number, since it uses as much as digits as its factorization.

225547899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75182636.

The product of its digits is 1814400, while the sum is 51.

The square root of 225547899 is about 15018.2521952456. The cubic root of 225547899 is about 608.7134930539.

It can be divided in two parts, 2255478 and 99, that multiplied together give a palindrome (223292322).

The spelling of 225547899 in words is "two hundred twenty-five million, five hundred forty-seven thousand, eight hundred ninety-nine".