125126275165 has 8 divisors (see below), whose sum is σ = 150159029688. Its totient is φ = 100096020480.

The previous prime is 125126275123. The next prime is 125126275181. The reversal of 125126275165 is 561572621521.

It can be written as a sum of positive squares in 4 ways, for example, as 413471556 + 124712803609 = 20334^2 + 353147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125126275165 - 2¹³ = 125126266973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513016 + ... + 716545.

It is an arithmetic number, because the mean of its divisors is an integer number (18769878711).

Almost surely, 2^125126275165 is an apocalyptic number.

It is an amenable number.

125126275165 is a deficient number, since it is larger than the sum of its proper divisors (25032754523).

125126275165 is a wasteful number, since it uses less digits than its factorization.

125126275165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249919.

The product of its digits is 252000, while the sum is 43.

Adding to 125126275165 its reverse (561572621521), we get a palindrome (686698896686).

The spelling of 125126275165 in words is "one hundred twenty-five billion, one hundred twenty-six million, two hundred seventy-five thousand, one hundred sixty-five".