388243125 has 50 divisors (see below), whose sum is σ = 724822670. Its totient is φ = 207036000.

The previous prime is 388243117. The next prime is 388243129. The reversal of 388243125 is 521342883.

It can be written as a sum of positive squares in 5 ways, for example, as 58384881 + 329858244 = 7641^2 + 18162^2 .

It is not a de Polignac number, because 388243125 - 2³ = 388243117 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 388243125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388243129) by changing a digit.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 46791 + ... + 54459.

Almost surely, 2^388243125 is an apocalyptic number.

It is an amenable number.

388243125 is a deficient number, since it is larger than the sum of its proper divisors (336579545).

388243125 is an frugal number, since it uses more digits than its factorization.

388243125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7701 (or 7677 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 388243125 is about 19703.8860380383. The cubic root of 388243125 is about 729.5156134818.

The spelling of 388243125 in words is "three hundred eighty-eight million, two hundred forty-three thousand, one hundred twenty-five".