38981340425 has 12 divisors (see below), whose sum is σ = 51180207516. Its totient is φ = 29350656000.

The previous prime is 38981340371. The next prime is 38981340457. The reversal of 38981340425 is 52404318983.

It can be written as a sum of positive squares in 6 ways, for example, as 5454265609 + 33527074816 = 73853^2 + 183104^2 .

It is not a de Polignac number, because 38981340425 - 2⁶ = 38981340361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38981340425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45859976 + ... + 45860825.

It is an arithmetic number, because the mean of its divisors is an integer number (4265017293).

Almost surely, 2^38981340425 is an apocalyptic number.

It is an amenable number.

38981340425 is a deficient number, since it is larger than the sum of its proper divisors (12198867091).

38981340425 is a wasteful number, since it uses less digits than its factorization.

38981340425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91720828 (or 91720823 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 38981340425 in words is "thirty-eight billion, nine hundred eighty-one million, three hundred forty thousand, four hundred twenty-five".