225745 has 16 divisors (see below), whose sum is σ = 306432. Its totient is φ = 158400.

The previous prime is 225733. The next prime is 225749. The reversal of 225745 is 547522.

It is not a de Polignac number, because 225745 - 2¹¹ = 223697 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 2¹⁷ + 7 + 5³ + 4⁷ + 5⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1420 + ... + 1570.

It is an arithmetic number, because the mean of its divisors is an integer number (19152).

2²²⁵⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

225745 is a deficient number, since it is larger than the sum of its proper divisors (80687).

225745 is a wasteful number, since it uses less digits than its factorization.

225745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192.

The product of its digits is 2800, while the sum is 25.

The square root of 225745 is about 475.1262989985. The cubic root of 225745 is about 60.8890754894.

The spelling of 225745 in words is "two hundred twenty-five thousand, seven hundred forty-five".