384512825 has 6 divisors (see below), whose sum is σ = 476795934. Its totient is φ = 307610240.

The previous prime is 384512819. The next prime is 384512839. The reversal of 384512825 is 528215483.

It can be written as a sum of positive squares in 3 ways, for example, as 83247376 + 301265449 = 9124^2 + 17357^2 .

It is not a de Polignac number, because 384512825 - 2¹⁰ = 384511801 is a prime.

It is a super-2 number, since 2×384512825² = 295700225178961250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7690232 + ... + 7690281.

It is an arithmetic number, because the mean of its divisors is an integer number (79465989).

Almost surely, 2^384512825 is an apocalyptic number.

It is an amenable number.

384512825 is a deficient number, since it is larger than the sum of its proper divisors (92283109).

384512825 is a wasteful number, since it uses less digits than its factorization.

384512825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15380523 (or 15380518 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 384512825 is about 19608.9985720842. The cubic root of 384512825 is about 727.1716573919.

The spelling of 384512825 in words is "three hundred eighty-four million, five hundred twelve thousand, eight hundred twenty-five".