389805725 has 24 divisors (see below), whose sum is σ = 513931392. Its totient is φ = 292635200.

The previous prime is 389805721. The next prime is 389805739. The reversal of 389805725 is 527508983.

It is not a de Polignac number, because 389805725 - 2² = 389805721 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 389805725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389805721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24080 + ... + 36870.

It is an arithmetic number, because the mean of its divisors is an integer number (21413808).

Almost surely, 2^389805725 is an apocalyptic number.

It is an amenable number.

389805725 is a deficient number, since it is larger than the sum of its proper divisors (124125667).

389805725 is a wasteful number, since it uses less digits than its factorization.

389805725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12877 (or 12872 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 389805725 is about 19743.4982969078. The cubic root of 389805725 is about 730.4930209280.

The spelling of 389805725 in words is "three hundred eighty-nine million, eight hundred five thousand, seven hundred twenty-five".