225807 has 4 divisors (see below), whose sum is σ = 301080. Its totient is φ = 150536.

The previous prime is 225781. The next prime is 225809. The reversal of 225807 is 708522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225807 - 2¹¹ = 223759 is a prime.

It is an Ulam number.

It is a D-number.

225807 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225807.

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 3 ways as a sum of consecutive naturals, for example, 37632 + ... + 37637.

It is an arithmetic number, because the mean of its divisors is an integer number (75270).

2²²⁵⁸⁰⁷ is an apocalyptic number.

225807 is a deficient number, since it is larger than the sum of its proper divisors (75273).

225807 is an equidigital number, since it uses as much as digits as its factorization.

225807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75272.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 225807 is about 475.1915403287. The cubic root of 225807 is about 60.8946492963.

The spelling of 225807 in words is "two hundred twenty-five thousand, eight hundred seven".