38815625 has 12 divisors (see below), whose sum is σ = 48520332. Its totient is φ = 31050000.

The previous prime is 38815619. The next prime is 38815649. The reversal of 38815625 is 52651883.

It can be written as a sum of positive squares in 6 ways, for example, as 21418384 + 17397241 = 4628^2 + 4171^2 .

It is not a de Polignac number, because 38815625 - 2²⁰ = 37767049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3086 + ... + 9335.

It is an arithmetic number, because the mean of its divisors is an integer number (4043361).

Almost surely, 2^38815625 is an apocalyptic number.

It is an amenable number.

38815625 is a deficient number, since it is larger than the sum of its proper divisors (9704707).

38815625 is an frugal number, since it uses more digits than its factorization.

38815625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12446 (or 12426 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 38815625 is about 6230.2186960010. The cubic root of 38815625 is about 338.5858942875.

The spelling of 38815625 in words is "thirty-eight million, eight hundred fifteen thousand, six hundred twenty-five".