38781525 has 12 divisors (see below), whose sum is σ = 64118912. Its totient is φ = 20683440.

The previous prime is 38781521. The next prime is 38781529. The reversal of 38781525 is 52518783.

38781525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38781521) and next prime (38781529).

It is not a de Polignac number, because 38781525 - 2² = 38781521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38781521) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 258469 + ... + 258618.

Almost surely, 2^38781525 is an apocalyptic number.

It is an amenable number.

38781525 is a deficient number, since it is larger than the sum of its proper divisors (25337387).

38781525 is a wasteful number, since it uses less digits than its factorization.

38781525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517100 (or 517095 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 38781525 is about 6227.4814331317. The cubic root of 38781525 is about 338.4867146257.

The spelling of 38781525 in words is "thirty-eight million, seven hundred eighty-one thousand, five hundred twenty-five".