125603805899 has 16 divisors (see below), whose sum is σ = 148377806304. Its totient is φ = 104819443200.

The previous prime is 125603805883. The next prime is 125603805923. The reversal of 125603805899 is 998508306521.

It is a cyclic number.

It is not a de Polignac number, because 125603805899 - 2⁴ = 125603805883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125603805809) 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, 2400494 + ... + 2452259.

It is an arithmetic number, because the mean of its divisors is an integer number (9273612894).

Almost surely, 2^125603805899 is an apocalyptic number.

125603805899 is a deficient number, since it is larger than the sum of its proper divisors (22774000405).

125603805899 is a wasteful number, since it uses less digits than its factorization.

125603805899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852958.

The product of its (nonzero) digits is 4665600, while the sum is 56.

The spelling of 125603805899 in words is "one hundred twenty-five billion, six hundred three million, eight hundred five thousand, eight hundred ninety-nine".