225397447 has 16 divisors (see below), whose sum is σ = 260428032. Its totient is φ = 193057920.

The previous prime is 225397411. The next prime is 225397453. The reversal of 225397447 is 744793522.

It is not a de Polignac number, because 225397447 - 2¹⁵ = 225364679 is a prime.

It is a super-2 number, since 2×225397447² = 101608018228235618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225397847) 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 in 15 ways as a sum of consecutive naturals, for example, 10303 + ... + 23599.

It is an arithmetic number, because the mean of its divisors is an integer number (16276752).

Almost surely, 2^225397447 is an apocalyptic number.

225397447 is a deficient number, since it is larger than the sum of its proper divisors (35030585).

225397447 is a wasteful number, since it uses less digits than its factorization.

225397447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13398.

The product of its digits is 423360, while the sum is 43.

The square root of 225397447 is about 15013.2423879720. The cubic root of 225397447 is about 608.5781152565.

The spelling of 225397447 in words is "two hundred twenty-five million, three hundred ninety-seven thousand, four hundred forty-seven".