38725515329 has 2 divisors, whose sum is σ = 38725515330. Its totient is φ = 38725515328.

The previous prime is 38725515317. The next prime is 38725515343. The reversal of 38725515329 is 92351552783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38581994929 + 143520400 = 196423^2 + 11980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38725515329 is a prime.

It is a super-2 number, since 2×38725515329² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38725515359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19362757664 + 19362757665.

It is an arithmetic number, because the mean of its divisors is an integer number (19362757665).

Almost surely, 2^38725515329 is an apocalyptic number.

It is an amenable number.

38725515329 is a deficient number, since it is larger than the sum of its proper divisors (1).

38725515329 is an equidigital number, since it uses as much as digits as its factorization.

38725515329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268000, while the sum is 50.

The spelling of 38725515329 in words is "thirty-eight billion, seven hundred twenty-five million, five hundred fifteen thousand, three hundred twenty-nine".