225194237 has 2 divisors, whose sum is σ = 225194238. Its totient is φ = 225194236.

The previous prime is 225194201. The next prime is 225194287. The reversal of 225194237 is 732491522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224430361 + 763876 = 14981^2 + 874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225194237 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 225194197 and 225194206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225194287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112597118 + 112597119.

It is an arithmetic number, because the mean of its divisors is an integer number (112597119).

Almost surely, 2^225194237 is an apocalyptic number.

It is an amenable number.

225194237 is a deficient number, since it is larger than the sum of its proper divisors (1).

225194237 is an equidigital number, since it uses as much as digits as its factorization.

225194237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 225194237 is about 15006.4731699357. The cubic root of 225194237 is about 608.3951697614.

The spelling of 225194237 in words is "two hundred twenty-five million, one hundred ninety-four thousand, two hundred thirty-seven".