1388751387625 has 32 divisors (see below), whose sum is σ = 1980971725824. Its totient is φ = 952183080000.

The previous prime is 1388751387623. The next prime is 1388751387677. The reversal of 1388751387625 is 5267831578831.

It is not a de Polignac number, because 1388751387625 - 2¹ = 1388751387623 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1388751387623) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 8443675 + ... + 8606575.

It is an arithmetic number, because the mean of its divisors is an integer number (61905366432).

Almost surely, 2^{1388751387625} is an apocalyptic number.

It is an amenable number.

1388751387625 is a deficient number, since it is larger than the sum of its proper divisors (592220338199).

1388751387625 is an equidigital number, since it uses as much as digits as its factorization.

1388751387625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172666 (or 172656 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 64.

The spelling of 1388751387625 in words is "one trillion, three hundred eighty-eight billion, seven hundred fifty-one million, three hundred eighty-seven thousand, six hundred twenty-five".