2505128548139 has 8 divisors (see below), whose sum is σ = 2921432709600. Its totient is φ = 2147253040968.

The previous prime is 2505128548123. The next prime is 2505128548163. The reversal of 2505128548139 is 9318458215052.

It is a happy number.

It is not a de Polignac number, because 2505128548139 - 2⁴ = 2505128548123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505128548939) 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 7 ways as a sum of consecutive naturals, for example, 3651790544 + ... + 3651791229.

It is an arithmetic number, because the mean of its divisors is an integer number (365179088700).

Almost surely, 2^{2505128548139} is an apocalyptic number.

2505128548139 is a deficient number, since it is larger than the sum of its proper divisors (416304161461).

2505128548139 is an frugal number, since it uses more digits than its factorization.

2505128548139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303581794 (or 7303581780 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 53.

The spelling of 2505128548139 in words is "two trillion, five hundred five billion, one hundred twenty-eight million, five hundred forty-eight thousand, one hundred thirty-nine".