125634861543 has 8 divisors (see below), whose sum is σ = 167617785456. Its totient is φ = 83704256000.

The previous prime is 125634861493. The next prime is 125634861571. The reversal of 125634861543 is 345168436521.

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 125634861543 - 2³⁰ = 124561119719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125634861492 and 125634861501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125634868543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13073988 + ... + 13083593.

It is an arithmetic number, because the mean of its divisors is an integer number (20952223182).

Almost surely, 2^125634861543 is an apocalyptic number.

125634861543 is a deficient number, since it is larger than the sum of its proper divisors (41982923913).

125634861543 is a wasteful number, since it uses less digits than its factorization.

125634861543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26159185.

The product of its digits is 2073600, while the sum is 48.

The spelling of 125634861543 in words is "one hundred twenty-five billion, six hundred thirty-four million, eight hundred sixty-one thousand, five hundred forty-three".