38138525 has 12 divisors (see below), whose sum is σ = 48818304. Its totient is φ = 29526000.

The previous prime is 38138521. The next prime is 38138533. The reversal of 38138525 is 52583183.

It is not a de Polignac number, because 38138525 - 2² = 38138521 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38138521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23831 + ... + 25380.

It is an arithmetic number, because the mean of its divisors is an integer number (4068192).

Almost surely, 2^38138525 is an apocalyptic number.

It is an amenable number.

38138525 is a deficient number, since it is larger than the sum of its proper divisors (10679779).

38138525 is a wasteful number, since it uses less digits than its factorization.

38138525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49252 (or 49247 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 38138525 is about 6175.6396429844. The cubic root of 38138525 is about 336.6055695205.

The spelling of 38138525 in words is "thirty-eight million, one hundred thirty-eight thousand, five hundred twenty-five".