225637 has 2 divisors, whose sum is σ = 225638. Its totient is φ = 225636.

The previous prime is 225629. The next prime is 225671. The reversal of 225637 is 736522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224676 + 961 = 474^2 + 31^2 .

It is a cyclic number.

It is not a de Polignac number, because 225637 - 2³ = 225629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112818 + 112819.

It is an arithmetic number, because the mean of its divisors is an integer number (112819).

2²²⁵⁶³⁷ is an apocalyptic number.

It is an amenable number.

225637 is a deficient number, since it is larger than the sum of its proper divisors (1).

225637 is an equidigital number, since it uses as much as digits as its factorization.

225637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 25.

The square root of 225637 is about 475.0126314110. The cubic root of 225637 is about 60.8793638396.

The spelling of 225637 in words is "two hundred twenty-five thousand, six hundred thirty-seven".