225801 has 8 divisors (see below), whose sum is σ = 334560. Its totient is φ = 150516.

The previous prime is 225781. The next prime is 225809. The reversal of 225801 is 108522.

It is not a de Polignac number, because 225801 - 2⁵ = 225769 is a prime.

225801 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (225809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4155 + ... + 4208.

It is an arithmetic number, because the mean of its divisors is an integer number (41820).

2²²⁵⁸⁰¹ is an apocalyptic number.

It is an amenable number.

225801 is a deficient number, since it is larger than the sum of its proper divisors (108759).

225801 is an equidigital number, since it uses as much as digits as its factorization.

225801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372 (or 8366 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 225801 is about 475.1852270431. The cubic root of 225801 is about 60.8941099402.

The spelling of 225801 in words is "two hundred twenty-five thousand, eight hundred one".