38638749025 has 6 divisors (see below), whose sum is σ = 47912048822. Its totient is φ = 30910999200.

The previous prime is 38638749001. The next prime is 38638749067. The reversal of 38638749025 is 52094783683.

It can be written as a sum of positive squares in 3 ways, for example, as 3315801889 + 35322947136 = 57583^2 + 187944^2 .

It is not a de Polignac number, because 38638749025 - 2²¹ = 38636651873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 772774956 + ... + 772775005.

Almost surely, 2^38638749025 is an apocalyptic number.

It is an amenable number.

38638749025 is a deficient number, since it is larger than the sum of its proper divisors (9273299797).

38638749025 is a wasteful number, since it uses less digits than its factorization.

38638749025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545549971 (or 1545549966 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 38638749025 in words is "thirty-eight billion, six hundred thirty-eight million, seven hundred forty-nine thousand, twenty-five".