125135647243 has 8 divisors (see below), whose sum is σ = 133079691920. Its totient is φ = 117327398400.

The previous prime is 125135647201. The next prime is 125135647253. The reversal of 125135647243 is 342746531521.

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

It is a cyclic number.

It is not a de Polignac number, because 125135647243 - 2³³ = 116545712651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125135647243.

It is not an unprimeable number, because it can be changed into a prime (125135647253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33947058 + ... + 33950743.

It is an arithmetic number, because the mean of its divisors is an integer number (16634961490).

Almost surely, 2^125135647243 is an apocalyptic number.

125135647243 is a deficient number, since it is larger than the sum of its proper divisors (7944044677).

125135647243 is an equidigital number, since it uses as much as digits as its factorization.

125135647243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67897917.

The product of its digits is 604800, while the sum is 43.

The spelling of 125135647243 in words is "one hundred twenty-five billion, one hundred thirty-five million, six hundred forty-seven thousand, two hundred forty-three".