125836869601 has 4 divisors (see below), whose sum is σ = 126681412500. Its totient is φ = 124992326704.

The previous prime is 125836869569. The next prime is 125836869607. The reversal of 125836869601 is 106968638521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106968638521 = 79 ⋅1354033399.

It can be written as a sum of positive squares in 2 ways, for example, as 31295379025 + 94541490576 = 176905^2 + 307476^2 .

It is a cyclic number.

It is not a de Polignac number, because 125836869601 - 2⁵ = 125836869569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125836869607) 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, 422271226 + ... + 422271523.

It is an arithmetic number, because the mean of its divisors is an integer number (31670353125).

Almost surely, 2^125836869601 is an apocalyptic number.

It is an amenable number.

125836869601 is a deficient number, since it is larger than the sum of its proper divisors (844542899).

125836869601 is an equidigital number, since it uses as much as digits as its factorization.

125836869601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844542898.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 125836869601 in words is "one hundred twenty-five billion, eight hundred thirty-six million, eight hundred sixty-nine thousand, six hundred one".