2125757750717 has 4 divisors (see below), whose sum is σ = 2132549309340. Its totient is φ = 2118966192096.

The previous prime is 2125757750693. The next prime is 2125757750719. The reversal of 2125757750717 is 7170577575212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 560071127641 + 1565686623076 = 748379^2 + 1251274^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125757750717 - 2⁶ = 2125757750653 is a prime.

It is a super-2 number, since 2×2125757750717² (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 (2125757750719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3395778842 + ... + 3395779467.

It is an arithmetic number, because the mean of its divisors is an integer number (533137327335).

Almost surely, 2^{2125757750717} is an apocalyptic number.

It is an amenable number.

2125757750717 is a deficient number, since it is larger than the sum of its proper divisors (6791558623).

2125757750717 is an equidigital number, since it uses as much as digits as its factorization.

2125757750717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6791558622.

The product of its (nonzero) digits is 8403500, while the sum is 56.

The spelling of 2125757750717 in words is "two trillion, one hundred twenty-five billion, seven hundred fifty-seven million, seven hundred fifty thousand, seven hundred seventeen".