225278357 has 2 divisors, whose sum is σ = 225278358. Its totient is φ = 225278356.

The previous prime is 225278327. The next prime is 225278359. The reversal of 225278357 is 753872522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148084561 + 77193796 = 12169^2 + 8786^2 .

It is a cyclic number.

It is not a de Polignac number, because 225278357 - 2¹⁰ = 225277333 is a prime.

Together with 225278359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225278359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112639178 + 112639179.

It is an arithmetic number, because the mean of its divisors is an integer number (112639179).

Almost surely, 2^225278357 is an apocalyptic number.

It is an amenable number.

225278357 is a deficient number, since it is larger than the sum of its proper divisors (1).

225278357 is an equidigital number, since it uses as much as digits as its factorization.

225278357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 41.

The square root of 225278357 is about 15009.2756987138. The cubic root of 225278357 is about 608.4709144922.

The spelling of 225278357 in words is "two hundred twenty-five million, two hundred seventy-eight thousand, three hundred fifty-seven".