225577 has 4 divisors (see below), whose sum is σ = 246096. Its totient is φ = 205060.

The previous prime is 225569. The next prime is 225581. The reversal of 225577 is 775522.

225577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 225577 - 2³ = 225569 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a nialpdrome in base 12.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (225527) 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, 10243 + ... + 10264.

It is an arithmetic number, because the mean of its divisors is an integer number (61524).

2²²⁵⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

225577 is a deficient number, since it is larger than the sum of its proper divisors (20519).

225577 is a wasteful number, since it uses less digits than its factorization.

225577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20518.

The product of its digits is 4900, while the sum is 28.

The square root of 225577 is about 474.9494709967. The cubic root of 225577 is about 60.8739671395.

Subtracting 225577 from its reverse (775522), we obtain a palindrome (549945).

It can be divided in two parts, 2255 and 77, that added together give a palindrome (2332).

The spelling of 225577 in words is "two hundred twenty-five thousand, five hundred seventy-seven".