225251 has 4 divisors (see below), whose sum is σ = 242592. Its totient is φ = 207912.

The previous prime is 225241. The next prime is 225257. The reversal of 225251 is 152522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152522 = 2 ⋅76261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225251 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225251.

It is not an unprimeable number, because it can be changed into a prime (225257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8651 + ... + 8676.

It is an arithmetic number, because the mean of its divisors is an integer number (60648).

2²²⁵²⁵¹ is an apocalyptic number.

225251 is a deficient number, since it is larger than the sum of its proper divisors (17341).

225251 is a wasteful number, since it uses less digits than its factorization.

225251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17340.

The product of its digits is 200, while the sum is 17.

The square root of 225251 is about 474.6061525096. The cubic root of 225251 is about 60.8446283316.

Adding to 225251 its reverse (152522), we get a palindrome (377773).

The spelling of 225251 in words is "two hundred twenty-five thousand, two hundred fifty-one".