225216545 has 8 divisors (see below), whose sum is σ = 270673920. Its totient is φ = 179897200.

The previous prime is 225216517. The next prime is 225216569. The reversal of 225216545 is 545612522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225216545 - 2¹⁰ = 225215521 is a prime.

It is a super-3 number, since 3×225216545³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30881 + ... + 37470.

It is an arithmetic number, because the mean of its divisors is an integer number (33834240).

Almost surely, 2^225216545 is an apocalyptic number.

It is an amenable number.

225216545 is a deficient number, since it is larger than the sum of its proper divisors (45457375).

225216545 is an equidigital number, since it uses as much as digits as its factorization.

225216545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69015.

The product of its digits is 24000, while the sum is 32.

The square root of 225216545 is about 15007.2164307709. The cubic root of 225216545 is about 608.4152585397.

The spelling of 225216545 in words is "two hundred twenty-five million, two hundred sixteen thousand, five hundred forty-five".