225051 has 4 divisors (see below), whose sum is σ = 300072. Its totient is φ = 150032.

The previous prime is 225037. The next prime is 225061. The reversal of 225051 is 150522.

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 225051 - 2¹⁰ = 224027 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 225051.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225051.

It is not an unprimeable number, because it can be changed into a prime (225061) 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, 37506 + ... + 37511.

It is an arithmetic number, because the mean of its divisors is an integer number (75018).

2²²⁵⁰⁵¹ is an apocalyptic number.

225051 is a deficient number, since it is larger than the sum of its proper divisors (75021).

225051 is an equidigital number, since it uses as much as digits as its factorization.

225051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75020.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 225051 is about 474.3954046995. The cubic root of 225051 is about 60.8266150501.

Adding to 225051 its reverse (150522), we get a palindrome (375573).

Subtracting from 225051 its reverse (150522), we obtain a square (74529 = 273²).

The spelling of 225051 in words is "two hundred twenty-five thousand, fifty-one".