125359638905 has 4 divisors (see below), whose sum is σ = 150431566692. Its totient is φ = 100287711120.

The previous prime is 125359638773. The next prime is 125359638923. The reversal of 125359638905 is 509836953521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509836953521 = 7 ⋅72833850503.

It can be written as a sum of positive squares in 2 ways, for example, as 23294085376 + 102065553529 = 152624^2 + 319477^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125359638905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12535963886 + ... + 12535963895.

It is an arithmetic number, because the mean of its divisors is an integer number (37607891673).

Almost surely, 2^125359638905 is an apocalyptic number.

It is an amenable number.

125359638905 is a deficient number, since it is larger than the sum of its proper divisors (25071927787).

125359638905 is an equidigital number, since it uses as much as digits as its factorization.

125359638905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25071927786.

The product of its (nonzero) digits is 8748000, while the sum is 56.

The spelling of 125359638905 in words is "one hundred twenty-five billion, three hundred fifty-nine million, six hundred thirty-eight thousand, nine hundred five".