138751375025 has 6 divisors (see below), whose sum is σ = 172051705062. Its totient is φ = 111001100000.

The previous prime is 138751374997. The next prime is 138751375051. The reversal of 138751375025 is 520573157831.

138751375025 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 3 ways, for example, as 51739249 + 138699635776 = 7193^2 + 372424^2 .

It is not a de Polignac number, because 138751375025 - 2⁶ = 138751374961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2775027476 + ... + 2775027525.

It is an arithmetic number, because the mean of its divisors is an integer number (28675284177).

Almost surely, 2^138751375025 is an apocalyptic number.

It is an amenable number.

138751375025 is a deficient number, since it is larger than the sum of its proper divisors (33300330037).

138751375025 is an equidigital number, since it uses as much as digits as its factorization.

138751375025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550055011 (or 5550055006 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 47.

The spelling of 138751375025 in words is "one hundred thirty-eight billion, seven hundred fifty-one million, three hundred seventy-five thousand, twenty-five".