39388356225 has 81 divisors (see below), whose sum is σ = 71802420937. Its totient is φ = 20640360000.

The previous prime is 39388356167. The next prime is 39388356233. The reversal of 39388356225 is 52265388393.

The square root of 39388356225 is 198465.

It is a perfect power (a square), and thus also a powerful number.

39388356225 is a `hidden beast` number, since 3 + 9 + 3 + 8 + 8 + 3 + 5 + 622 + 5 = 666.

39388356225 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 4 ways, for example, as 7272848961 + 32115507264 = 85281^2 + 179208^2 .

It is not a de Polignac number, because 39388356225 - 2¹¹ = 39388354177 is a prime.

It is a super-2 number, since 2×39388356225² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

Its product of digits (9331200) is a multiple of the sum of its prime divisors (240).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 300674410 + ... + 300674540.

Almost surely, 2^39388356225 is an apocalyptic number.

39388356225 is the 198465-th square number.

39388356225 is the 99233-rd centered octagonal number.

It is an amenable number.

39388356225 is a deficient number, since it is larger than the sum of its proper divisors (32414064712).

39388356225 is a wasteful number, since it uses less digits than its factorization.

39388356225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 240 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The spelling of 39388356225 in words is "thirty-nine billion, three hundred eighty-eight million, three hundred fifty-six thousand, two hundred twenty-five".