125203205743 has 64 divisors (see below), whose sum is σ = 165511102464. Its totient is φ = 91819728000.

The previous prime is 125203205717. The next prime is 125203205749. The reversal of 125203205743 is 347502302521.

It is not a de Polignac number, because 125203205743 - 2²⁵ = 125169651311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125203205699 and 125203205708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125203205749) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114549505 + ... + 114550597.

It is an arithmetic number, because the mean of its divisors is an integer number (2586110976).

Almost surely, 2^125203205743 is an apocalyptic number.

125203205743 is a deficient number, since it is larger than the sum of its proper divisors (40307896721).

125203205743 is a wasteful number, since it uses less digits than its factorization.

125203205743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116.

The product of its (nonzero) digits is 50400, while the sum is 34.

The spelling of 125203205743 in words is "one hundred twenty-five billion, two hundred three million, two hundred five thousand, seven hundred forty-three".