125795888661 has 4 divisors (see below), whose sum is σ = 167727851552. Its totient is φ = 83863925772.

The previous prime is 125795888611. The next prime is 125795888717. The reversal of 125795888661 is 166888597521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 166888597521 = 3 ⋅55629532507.

It is not a de Polignac number, because 125795888661 - 2¹¹ = 125795886613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125795888592 and 125795888601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125795888611) 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, 20965981441 + ... + 20965981446.

It is an arithmetic number, because the mean of its divisors is an integer number (41931962888).

Almost surely, 2^125795888661 is an apocalyptic number.

It is an amenable number.

125795888661 is a deficient number, since it is larger than the sum of its proper divisors (41931962891).

125795888661 is an equidigital number, since it uses as much as digits as its factorization.

125795888661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41931962890.

The product of its digits is 58060800, while the sum is 66.

The spelling of 125795888661 in words is "one hundred twenty-five billion, seven hundred ninety-five million, eight hundred eighty-eight thousand, six hundred sixty-one".