539438836225 has 9 divisors (see below), whose sum is σ = 668908710633. Its totient is φ = 431548131120.

The previous prime is 539438836151. The next prime is 539438836247. The reversal of 539438836225 is 522638834935.

The square root of 539438836225 is 734465.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 45038601729 + 494400234496 = 212223^2 + 703136^2 .

It is not a de Polignac number, because 539438836225 - 2¹⁷ = 539438705153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 539438836225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3598879 + ... + 3745771.

Almost surely, 2^539438836225 is an apocalyptic number.

539438836225 is the 734465-th square number.

539438836225 is the 367233-rd centered octagonal number.

It is an amenable number.

539438836225 is a deficient number, since it is larger than the sum of its proper divisors (129469874408).

539438836225 is an frugal number, since it uses more digits than its factorization.

539438836225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293796 (or 146898 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 58.

The spelling of 539438836225 in words is "five hundred thirty-nine billion, four hundred thirty-eight million, eight hundred thirty-six thousand, two hundred twenty-five".