545239225 has 6 divisors (see below), whose sum is σ = 676096670. Its totient is φ = 436191360.

The previous prime is 545239223. The next prime is 545239241. The reversal of 545239225 is 522932545.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 156816 + 545082409 = 396^2 + 23347^2 .

It is not a de Polignac number, because 545239225 - 2¹ = 545239223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545239223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10904760 + ... + 10904809.

Almost surely, 2^545239225 is an apocalyptic number.

It is an amenable number.

545239225 is a deficient number, since it is larger than the sum of its proper divisors (130857445).

545239225 is a wasteful number, since it uses less digits than its factorization.

545239225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21809579 (or 21809574 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 545239225 is about 23350.3581342985. The cubic root of 545239225 is about 816.9504141510.

The spelling of 545239225 in words is "five hundred forty-five million, two hundred thirty-nine thousand, two hundred twenty-five".