138751387625 has 8 divisors (see below), whose sum is σ = 173161731912. Its totient is φ = 111001110000.

The previous prime is 138751387589. The next prime is 138751387631. The reversal of 138751387625 is 526783157831.

It can be written as a sum of positive squares in 4 ways, for example, as 23077255744 + 115674131881 = 151912^2 + 340109^2 .

It is not a de Polignac number, because 138751387625 - 2⁶ = 138751387561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555005426 + ... + 555005675.

It is an arithmetic number, because the mean of its divisors is an integer number (21645216489).

Almost surely, 2^138751387625 is an apocalyptic number.

It is an amenable number.

138751387625 is a deficient number, since it is larger than the sum of its proper divisors (34410344287).

138751387625 is an equidigital number, since it uses as much as digits as its factorization.

138751387625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110011116 (or 1110011106 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 56.

The spelling of 138751387625 in words is "one hundred thirty-eight billion, seven hundred fifty-one million, three hundred eighty-seven thousand, six hundred twenty-five".