1325757638757 has 4 divisors (see below), whose sum is σ = 1767676851680. Its totient is φ = 883838425836.

The previous prime is 1325757638669. The next prime is 1325757638771. The reversal of 1325757638757 is 7578367575231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1325757638757 - 2²³ = 1325749250149 is a prime.

It is a super-2 number, since 2×1325757638757² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325757636757) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 220959606457 + ... + 220959606462.

It is an arithmetic number, because the mean of its divisors is an integer number (441919212920).

Almost surely, 2^{1325757638757} is an apocalyptic number.

It is an amenable number.

1325757638757 is a deficient number, since it is larger than the sum of its proper divisors (441919212923).

1325757638757 is an equidigital number, since it uses as much as digits as its factorization.

1325757638757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441919212922.

The product of its digits is 259308000, while the sum is 66.

The spelling of 1325757638757 in words is "one trillion, three hundred twenty-five billion, seven hundred fifty-seven million, six hundred thirty-eight thousand, seven hundred fifty-seven".