125636340005 has 16 divisors (see below), whose sum is σ = 165516977664. Its totient is φ = 90789890880.

The previous prime is 125636339989. The next prime is 125636340017. The reversal of 125636340005 is 500043636521.

It is not a de Polignac number, because 125636340005 - 2⁴ = 125636339989 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 15 ways as a sum of consecutive naturals, for example, 7266197 + ... + 7283466.

It is an arithmetic number, because the mean of its divisors is an integer number (10344811104).

Almost surely, 2^125636340005 is an apocalyptic number.

It is an amenable number.

125636340005 is a deficient number, since it is larger than the sum of its proper divisors (39880637659).

125636340005 is a wasteful number, since it uses less digits than its factorization.

125636340005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14549836.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 125636340005 its reverse (500043636521), we get a palindrome (625679976526).

The spelling of 125636340005 in words is "one hundred twenty-five billion, six hundred thirty-six million, three hundred forty thousand, five".