225727617 has 4 divisors (see below), whose sum is σ = 300970160. Its totient is φ = 150485076.

The previous prime is 225727603. The next prime is 225727637. The reversal of 225727617 is 716727522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 225727617 - 2¹² = 225723521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225727637) 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, 37621267 + ... + 37621272.

It is an arithmetic number, because the mean of its divisors is an integer number (75242540).

Almost surely, 2^225727617 is an apocalyptic number.

It is an amenable number.

225727617 is a deficient number, since it is larger than the sum of its proper divisors (75242543).

225727617 is an equidigital number, since it uses as much as digits as its factorization.

225727617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75242542.

The product of its digits is 82320, while the sum is 39.

The square root of 225727617 is about 15024.2343232525. The cubic root of 225727617 is about 608.8751257254.

The spelling of 225727617 in words is "two hundred twenty-five million, seven hundred twenty-seven thousand, six hundred seventeen".