225507447 has 48 divisors (see below), whose sum is σ = 378069120. Its totient is φ = 128088000.

The previous prime is 225507413. The next prime is 225507487. The reversal of 225507447 is 744705522.

It is a happy number.

It is not a de Polignac number, because 225507447 - 2¹⁹ = 224983159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225507487) 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 47 ways as a sum of consecutive naturals, for example, 189388 + ... + 190574.

It is an arithmetic number, because the mean of its divisors is an integer number (7876440).

Almost surely, 2^225507447 is an apocalyptic number.

225507447 is a deficient number, since it is larger than the sum of its proper divisors (152561673).

225507447 is a wasteful number, since it uses less digits than its factorization.

225507447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 225507447 is about 15016.9053736114. The cubic root of 225507447 is about 608.6770999706.

The spelling of 225507447 in words is "two hundred twenty-five million, five hundred seven thousand, four hundred forty-seven".