138745922125 has 8 divisors (see below), whose sum is σ = 173154910968. Its totient is φ = 110996737600.

The previous prime is 138745922113. The next prime is 138745922191. The reversal of 138745922125 is 521229547831.

It can be written as a sum of positive squares in 4 ways, for example, as 550090116 + 138195832009 = 23454^2 + 371747^2 .

It is not a de Polignac number, because 138745922125 - 2⁷ = 138745921997 is a prime.

It is a super-3 number, since 3×138745922125³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 554983564 + ... + 554983813.

It is an arithmetic number, because the mean of its divisors is an integer number (21644363871).

Almost surely, 2^138745922125 is an apocalyptic number.

It is an amenable number.

138745922125 is a deficient number, since it is larger than the sum of its proper divisors (34408988843).

138745922125 is an equidigital number, since it uses as much as digits as its factorization.

138745922125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109967392 (or 1109967382 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The spelling of 138745922125 in words is "one hundred thirty-eight billion, seven hundred forty-five million, nine hundred twenty-two thousand, one hundred twenty-five".