225389747 has 16 divisors (see below), whose sum is σ = 254644224. Its totient is φ = 197640000.

The previous prime is 225389729. The next prime is 225389777. The reversal of 225389747 is 747983522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 225389747 - 2⁶ = 225389683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225389777) 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, 124247 + ... + 126047.

It is an arithmetic number, because the mean of its divisors is an integer number (15915264).

Almost surely, 2^225389747 is an apocalyptic number.

225389747 is a deficient number, since it is larger than the sum of its proper divisors (29254477).

225389747 is a wasteful number, since it uses less digits than its factorization.

225389747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210.

The product of its digits is 846720, while the sum is 47.

The square root of 225389747 is about 15012.9859455073. The cubic root of 225389747 is about 608.5711851205.

The spelling of 225389747 in words is "two hundred twenty-five million, three hundred eighty-nine thousand, seven hundred forty-seven".