383215625 has 24 divisors (see below), whose sum is σ = 515888856. Its totient is φ = 282960000.

The previous prime is 383215607. The next prime is 383215631. The reversal of 383215625 is 526512383.

It can be written as a sum of positive squares in 12 ways, for example, as 381967936 + 1247689 = 19544^2 + 1117^2 .

It is not a de Polignac number, because 383215625 - 2⁸ = 383215369 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35909 + ... + 45341.

It is an arithmetic number, because the mean of its divisors is an integer number (21495369).

Almost surely, 2^383215625 is an apocalyptic number.

It is an amenable number.

383215625 is a deficient number, since it is larger than the sum of its proper divisors (132673231).

383215625 is an frugal number, since it uses more digits than its factorization.

383215625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9471 (or 9451 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 383215625 is about 19575.8939770321. The cubic root of 383215625 is about 726.3530025737.

The spelling of 383215625 in words is "three hundred eighty-three million, two hundred fifteen thousand, six hundred twenty-five".