125554445643 has 32 divisors (see below), whose sum is σ = 191306644992. Its totient is φ = 72501862400.

The previous prime is 125554445633. The next prime is 125554445651. The reversal of 125554445643 is 346544455521.

It is not a de Polignac number, because 125554445643 - 2¹³ = 125554437451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125554445592 and 125554445601.

It is not an unprimeable number, because it can be changed into a prime (125554445603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126768 + ... + 516893.

It is an arithmetic number, because the mean of its divisors is an integer number (5978332656).

Almost surely, 2^125554445643 is an apocalyptic number.

125554445643 is a deficient number, since it is larger than the sum of its proper divisors (65752199349).

125554445643 is a wasteful number, since it uses less digits than its factorization.

125554445643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643955.

The product of its digits is 5760000, while the sum is 48.

The spelling of 125554445643 in words is "one hundred twenty-five billion, five hundred fifty-four million, four hundred forty-five thousand, six hundred forty-three".