225157 has 2 divisors, whose sum is σ = 225158. Its totient is φ = 225156.

The previous prime is 225149. The next prime is 225161. The reversal of 225157 is 751522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181476 + 43681 = 426^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 225157 - 2³ = 225149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112578 + 112579.

It is an arithmetic number, because the mean of its divisors is an integer number (112579).

2²²⁵¹⁵⁷ is an apocalyptic number.

It is an amenable number.

225157 is a deficient number, since it is larger than the sum of its proper divisors (1).

225157 is an equidigital number, since it uses as much as digits as its factorization.

225157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 700, while the sum is 22.

The square root of 225157 is about 474.5071126970. The cubic root of 225157 is about 60.8361634179.

Adding to 225157 its reverse (751522), we get a palindrome (976679).

It can be divided in two parts, 22515 and 7, that added together give a palindrome (22522).

The spelling of 225157 in words is "two hundred twenty-five thousand, one hundred fifty-seven".