389181725 has 12 divisors (see below), whose sum is σ = 495629364. Its totient is φ = 302929920.

The previous prime is 389181707. The next prime is 389181733. The reversal of 389181725 is 527181983.

It can be written as a sum of positive squares in 6 ways, for example, as 3334276 + 385847449 = 1826^2 + 19643^2 .

It is not a de Polignac number, because 389181725 - 2¹⁴ = 389165341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209444 + ... + 211293.

It is an arithmetic number, because the mean of its divisors is an integer number (41302447).

Almost surely, 2^389181725 is an apocalyptic number.

It is an amenable number.

389181725 is a deficient number, since it is larger than the sum of its proper divisors (106447639).

389181725 is a wasteful number, since it uses less digits than its factorization.

389181725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420784 (or 420779 counting only the distinct ones).

The product of its digits is 120960, while the sum is 44.

The square root of 389181725 is about 19727.6892970261. The cubic root of 389181725 is about 730.1030223026.

The spelling of 389181725 in words is "three hundred eighty-nine million, one hundred eighty-one thousand, seven hundred twenty-five".