38729225 has 6 divisors (see below), whose sum is σ = 48024270. Its totient is φ = 30983360.

The previous prime is 38729221. The next prime is 38729227. The reversal of 38729225 is 52292783.

38729225 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 3 ways, for example, as 2199289 + 36529936 = 1483^2 + 6044^2 .

It is not a de Polignac number, because 38729225 - 2² = 38729221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38729221) 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 5 ways as a sum of consecutive naturals, for example, 774560 + ... + 774609.

It is an arithmetic number, because the mean of its divisors is an integer number (8004045).

Almost surely, 2^38729225 is an apocalyptic number.

It is an amenable number.

38729225 is a deficient number, since it is larger than the sum of its proper divisors (9295045).

38729225 is a wasteful number, since it uses less digits than its factorization.

38729225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549179 (or 1549174 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 38729225 is about 6223.2808871206. The cubic root of 38729225 is about 338.3344873384.

The spelling of 38729225 in words is "thirty-eight million, seven hundred twenty-nine thousand, two hundred twenty-five".