225547447 has 2 divisors, whose sum is σ = 225547448. Its totient is φ = 225547446.

The previous prime is 225547433. The next prime is 225547493. The reversal of 225547447 is 744745522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225547447 - 2⁷ = 225547319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225548447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112773723 + 112773724.

It is an arithmetic number, because the mean of its divisors is an integer number (112773724).

Almost surely, 2^225547447 is an apocalyptic number.

225547447 is a deficient number, since it is larger than the sum of its proper divisors (1).

225547447 is an equidigital number, since it uses as much as digits as its factorization.

225547447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313600, while the sum is 40.

The square root of 225547447 is about 15018.2371468825. The cubic root of 225547447 is about 608.7130864312.

The spelling of 225547447 in words is "two hundred twenty-five million, five hundred forty-seven thousand, four hundred forty-seven".