38921371225 has 81 divisors (see below), whose sum is σ = 56621286813. Its totient is φ = 26515104000.

The previous prime is 38921371219. The next prime is 38921371241. The reversal of 38921371225 is 52217312983.

The square root of 38921371225 is 197285.

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

It can be written as a sum of positive squares in 4 ways, for example, as 910409929 + 38010961296 = 30173^2 + 194964^2 .

It is not a de Polignac number, because 38921371225 - 2¹¹ = 38921369177 is a prime.

It is a Duffinian 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, 184461370 + ... + 184461580.

Almost surely, 2^38921371225 is an apocalyptic number.

38921371225 is the 197285-th square number.

38921371225 is the 98643-rd centered octagonal number.

It is an amenable number.

38921371225 is a deficient number, since it is larger than the sum of its proper divisors (17699915588).

38921371225 is a wasteful number, since it uses less digits than its factorization.

38921371225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 244 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The spelling of 38921371225 in words is "thirty-eight billion, nine hundred twenty-one million, three hundred seventy-one thousand, two hundred twenty-five".