389217725 has 24 divisors (see below), whose sum is σ = 531861792. Its totient is φ = 280728000.

The previous prime is 389217683. The next prime is 389217727. The reversal of 389217725 is 527712983.

It is not a de Polignac number, because 389217725 - 2²⁰ = 388169149 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389217727) 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, 50 + ... + 27900.

It is an arithmetic number, because the mean of its divisors is an integer number (22160908).

Almost surely, 2^389217725 is an apocalyptic number.

It is an amenable number.

389217725 is a deficient number, since it is larger than the sum of its proper divisors (142644067).

389217725 is a wasteful number, since it uses less digits than its factorization.

389217725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27917 (or 27912 counting only the distinct ones).

The product of its digits is 211680, while the sum is 44.

The square root of 389217725 is about 19728.6016990561. The cubic root of 389217725 is about 730.1255335501.

The spelling of 389217725 in words is "three hundred eighty-nine million, two hundred seventeen thousand, seven hundred twenty-five".