225180493 has 2 divisors, whose sum is σ = 225180494. Its totient is φ = 225180492.

The previous prime is 225180491. The next prime is 225180499. The reversal of 225180493 is 394081522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168298729 + 56881764 = 12973^2 + 7542^2 .

It is a cyclic number.

It is not a de Polignac number, because 225180493 - 2¹ = 225180491 is a prime.

Together with 225180491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225180491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112590246 + 112590247.

It is an arithmetic number, because the mean of its divisors is an integer number (112590247).

Almost surely, 2^225180493 is an apocalyptic number.

It is an amenable number.

225180493 is a deficient number, since it is larger than the sum of its proper divisors (1).

225180493 is an equidigital number, since it uses as much as digits as its factorization.

225180493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 225180493 is about 15006.0152272347. The cubic root of 225180493 is about 608.3827923675.

The spelling of 225180493 in words is "two hundred twenty-five million, one hundred eighty thousand, four hundred ninety-three".