386515625 has 28 divisors (see below), whose sum is σ = 500384220. Its totient is φ = 298200000.

The previous prime is 386515607. The next prime is 386515669. The reversal of 386515625 is 526515683.

It can be written as a sum of positive squares in 14 ways, for example, as 231861529 + 154654096 = 15227^2 + 12436^2 .

It is not a de Polignac number, because 386515625 - 2⁶ = 386515561 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 452699 + ... + 453551.

It is an arithmetic number, because the mean of its divisors is an integer number (17870865).

Almost surely, 2^386515625 is an apocalyptic number.

It is an amenable number.

386515625 is a deficient number, since it is larger than the sum of its proper divisors (113868595).

386515625 is an frugal number, since it uses more digits than its factorization.

386515625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 887 counting only the distinct ones).

The product of its digits is 216000, while the sum is 41.

The square root of 386515625 is about 19660.0006358087. Note that the first 3 decimals coincide. The cubic root of 386515625 is about 728.4320038123.

It can be divided in two parts, 3865156 and 25, that multiplied together give a square (96628900 = 9830²).

The spelling of 386515625 in words is "three hundred eighty-six million, five hundred fifteen thousand, six hundred twenty-five".