38997625 has 8 divisors (see below), whose sum is σ = 48669192. Its totient is φ = 31198000.

The previous prime is 38997599. The next prime is 38997631. The reversal of 38997625 is 52679983.

38997625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2286144 + 36711481 = 1512^2 + 6059^2 .

It is not a de Polignac number, because 38997625 - 2¹¹ = 38995577 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 155866 + ... + 156115.

It is an arithmetic number, because the mean of its divisors is an integer number (6083649).

Almost surely, 2^38997625 is an apocalyptic number.

It is an amenable number.

38997625 is a deficient number, since it is larger than the sum of its proper divisors (9671567).

38997625 is an equidigital number, since it uses as much as digits as its factorization.

38997625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311996 (or 311986 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 38997625 is about 6244.8078433207. The cubic root of 38997625 is about 339.1142602923.

The spelling of 38997625 in words is "thirty-eight million, nine hundred ninety-seven thousand, six hundred twenty-five".