38564225 has 18 divisors (see below), whose sum is σ = 55628694. Its totient is φ = 26443200.

The previous prime is 38564213. The next prime is 38564257. The reversal of 38564225 is 52246583.

It can be written as a sum of positive squares in 3 ways, for example, as 12544 + 38551681 = 112^2 + 6209^2 .

It is not a de Polignac number, because 38564225 - 2⁴ = 38564209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14516 + ... + 16965.

It is an arithmetic number, because the mean of its divisors is an integer number (3090483).

Almost surely, 2^38564225 is an apocalyptic number.

38564225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38564225 is a deficient number, since it is larger than the sum of its proper divisors (17064469).

38564225 is a wasteful number, since it uses less digits than its factorization.

38564225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31505 (or 31493 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 38564225 is about 6210.0100644041. The cubic root of 38564225 is about 337.8533291015.

The spelling of 38564225 in words is "thirty-eight million, five hundred sixty-four thousand, two hundred twenty-five".