225487571 has 4 divisors (see below), whose sum is σ = 230731512. Its totient is φ = 220243632.

The previous prime is 225487543. The next prime is 225487631. The reversal of 225487571 is 175784522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225487571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225487501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2621906 + ... + 2621991.

It is an arithmetic number, because the mean of its divisors is an integer number (57682878).

Almost surely, 2^225487571 is an apocalyptic number.

225487571 is a deficient number, since it is larger than the sum of its proper divisors (5243941).

225487571 is an equidigital number, since it uses as much as digits as its factorization.

225487571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243940.

The product of its digits is 156800, while the sum is 41.

The square root of 225487571 is about 15016.2435715461. The cubic root of 225487571 is about 608.6592167156.

The spelling of 225487571 in words is "two hundred twenty-five million, four hundred eighty-seven thousand, five hundred seventy-one".