225499997 has 2 divisors, whose sum is σ = 225499998. Its totient is φ = 225499996.

The previous prime is 225499991. The next prime is 225500003. The reversal of 225499997 is 799994522.

It is a balanced prime because it is at equal distance from previous prime (225499991) and next prime (225500003).

It can be written as a sum of positive squares in only one way, i.e., 194072761 + 31427236 = 13931^2 + 5606^2 .

It is a cyclic number.

It is not a de Polignac number, because 225499997 - 2¹² = 225495901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225499991) 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, 112749998 + 112749999.

It is an arithmetic number, because the mean of its divisors is an integer number (112749999).

Almost surely, 2^225499997 is an apocalyptic number.

It is an amenable number.

225499997 is a deficient number, since it is larger than the sum of its proper divisors (1).

225499997 is an equidigital number, since it uses as much as digits as its factorization.

225499997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 56.

The square root of 225499997 is about 15016.6573177921. The cubic root of 225499997 is about 608.6703970222.

The spelling of 225499997 in words is "two hundred twenty-five million, four hundred ninety-nine thousand, nine hundred ninety-seven".