540404225 has 6 divisors (see below), whose sum is σ = 670101270. Its totient is φ = 432323360.

The previous prime is 540404141. The next prime is 540404243. The reversal of 540404225 is 522404045.

It can be written as a sum of positive squares in 3 ways, for example, as 132687361 + 407716864 = 11519^2 + 20192^2 .

It is not a de Polignac number, because 540404225 - 2²⁴ = 523627009 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 540404194 and 540404203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10808060 + ... + 10808109.

It is an arithmetic number, because the mean of its divisors is an integer number (111683545).

Almost surely, 2^540404225 is an apocalyptic number.

It is an amenable number.

540404225 is a deficient number, since it is larger than the sum of its proper divisors (129697045).

540404225 is a wasteful number, since it uses less digits than its factorization.

540404225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21616179 (or 21616174 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 540404225 is about 23246.5959873698. The cubic root of 540404225 is about 814.5284260509.

The spelling of 540404225 in words is "five hundred forty million, four hundred four thousand, two hundred twenty-five".