225438197 has 2 divisors, whose sum is σ = 225438198. Its totient is φ = 225438196.

The previous prime is 225438167. The next prime is 225438221. The reversal of 225438197 is 791834522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119224561 + 106213636 = 10919^2 + 10306^2 .

It is a cyclic number.

It is not a de Polignac number, because 225438197 - 2⁶ = 225438133 is a prime.

It is a super-2 number, since 2×225438197² = 101644761333221618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225438137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112719098 + 112719099.

It is an arithmetic number, because the mean of its divisors is an integer number (112719099).

Almost surely, 2^225438197 is an apocalyptic number.

It is an amenable number.

225438197 is a deficient number, since it is larger than the sum of its proper divisors (1).

225438197 is an equidigital number, since it uses as much as digits as its factorization.

225438197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 225438197 is about 15014.5994618571. The cubic root of 225438197 is about 608.6147883483.

The spelling of 225438197 in words is "two hundred twenty-five million, four hundred thirty-eight thousand, one hundred ninety-seven".