225306451 has 2 divisors, whose sum is σ = 225306452. Its totient is φ = 225306450.

The previous prime is 225306443. The next prime is 225306467. The reversal of 225306451 is 154603522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225306451 - 2³ = 225306443 is a prime.

It is not a weakly prime, because it can be changed into another prime (225301451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112653225 + 112653226.

It is an arithmetic number, because the mean of its divisors is an integer number (112653226).

Almost surely, 2^225306451 is an apocalyptic number.

225306451 is a deficient number, since it is larger than the sum of its proper divisors (1).

225306451 is an equidigital number, since it uses as much as digits as its factorization.

225306451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 225306451 is about 15010.2115574698. The cubic root of 225306451 is about 608.4962071590.

Adding to 225306451 its reverse (154603522), we get a palindrome (379909973).

The spelling of 225306451 in words is "two hundred twenty-five million, three hundred six thousand, four hundred fifty-one".