125644135546 has 8 divisors (see below), whose sum is σ = 196660386144. Its totient is φ = 60090673500.

The previous prime is 125644135457. The next prime is 125644135627. The reversal of 125644135546 is 645531446521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 2731394251 = 125644135546 / (1 + 2 + 5 + 6 + 4 + 4 + 1 + 3 + 5 + 5 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 125644135496 and 125644135505.

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, 1365697080 + ... + 1365697171.

It is an arithmetic number, because the mean of its divisors is an integer number (24582548268).

Almost surely, 2^125644135546 is an apocalyptic number.

125644135546 is a deficient number, since it is larger than the sum of its proper divisors (71016250598).

125644135546 is a wasteful number, since it uses less digits than its factorization.

125644135546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731394276.

The product of its digits is 1728000, while the sum is 46.

The spelling of 125644135546 in words is "one hundred twenty-five billion, six hundred forty-four million, one hundred thirty-five thousand, five hundred forty-six".