225391403 has 2 divisors, whose sum is σ = 225391404. Its totient is φ = 225391402.

The previous prime is 225391381. The next prime is 225391409. The reversal of 225391403 is 304193522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225391403 - 2¹² = 225387307 is a prime.

It is not a weakly prime, because it can be changed into another prime (225391409) 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, 112695701 + 112695702.

It is an arithmetic number, because the mean of its divisors is an integer number (112695702).

Almost surely, 2^225391403 is an apocalyptic number.

225391403 is a deficient number, since it is larger than the sum of its proper divisors (1).

225391403 is an equidigital number, since it uses as much as digits as its factorization.

225391403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 225391403 is about 15013.0410976591. The cubic root of 225391403 is about 608.5726755631.

The spelling of 225391403 in words is "two hundred twenty-five million, three hundred ninety-one thousand, four hundred three".