389819166025 has 27 divisors (see below), whose sum is σ = 486645435381. Its totient is φ = 309759997440.

The previous prime is 389819165999. The next prime is 389819166091. The reversal of 389819166025 is 520661918983.

The square root of 389819166025 is 624355.

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 62694651321 + 327124514704 = 250389^2 + 571948^2 .

It is not a de Polignac number, because 389819166025 - 2⁹ = 389819165513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 602502252 + ... + 602502898.

Almost surely, 2^389819166025 is an apocalyptic number.

389819166025 is the 624355-th square number.

389819166025 is the 312178-th centered octagonal number.

It is an amenable number.

389819166025 is a deficient number, since it is larger than the sum of its proper divisors (96826269356).

389819166025 is an frugal number, since it uses more digits than its factorization.

389819166025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 58.

The spelling of 389819166025 in words is "three hundred eighty-nine billion, eight hundred nineteen million, one hundred sixty-six thousand, twenty-five".