125603805901 has 16 divisors (see below), whose sum is σ = 147070280448. Its totient is φ = 105018883200.

The previous prime is 125603805883. The next prime is 125603805923. The reversal of 125603805901 is 109508306521.

It is not a de Polignac number, because 125603805901 - 2⁷ = 125603805773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125603805931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2149791 + ... + 2207443.

It is an arithmetic number, because the mean of its divisors is an integer number (9191892528).

Almost surely, 2^125603805901 is an apocalyptic number.

It is an amenable number.

125603805901 is a deficient number, since it is larger than the sum of its proper divisors (21466474547).

125603805901 is an equidigital number, since it uses as much as digits as its factorization.

125603805901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65292.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 125603805901 in words is "one hundred twenty-five billion, six hundred three million, eight hundred five thousand, nine hundred one".