38643625 has 32 divisors (see below), whose sum is σ = 51891840. Its totient is φ = 28641600.

The previous prime is 38643623. The next prime is 38643629. The reversal of 38643625 is 52634683.

It is not a de Polignac number, because 38643625 - 2¹ = 38643623 is a prime.

Its product of digits (103680) is a multiple of the sum of its prime divisors (384).

It is not an unprimeable number, because it can be changed into a prime (38643623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125722 + ... + 126028.

It is an arithmetic number, because the mean of its divisors is an integer number (1621620).

Almost surely, 2^38643625 is an apocalyptic number.

It is an amenable number.

38643625 is a deficient number, since it is larger than the sum of its proper divisors (13248215).

38643625 is a wasteful number, since it uses less digits than its factorization.

38643625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 384 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 38643625 is about 6216.3996814877. The cubic root of 38643625 is about 338.0850392332.

The spelling of 38643625 in words is "thirty-eight million, six hundred forty-three thousand, six hundred twenty-five".