225552997 has 2 divisors, whose sum is σ = 225552998. Its totient is φ = 225552996.

The previous prime is 225552961. The next prime is 225553057. The reversal of 225552997 is 799255522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153115876 + 72437121 = 12374^2 + 8511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225552997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225552907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112776498 + 112776499.

It is an arithmetic number, because the mean of its divisors is an integer number (112776499).

Almost surely, 2^225552997 is an apocalyptic number.

It is an amenable number.

225552997 is a deficient number, since it is larger than the sum of its proper divisors (1).

225552997 is an equidigital number, since it uses as much as digits as its factorization.

225552997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 46.

The square root of 225552997 is about 15018.4219210941. The cubic root of 225552997 is about 608.7180792165.

It can be divided in two parts, 22555 and 2997, that added together give a palindrome (25552).

The spelling of 225552997 in words is "two hundred twenty-five million, five hundred fifty-two thousand, nine hundred ninety-seven".