125517064543 has 16 divisors (see below), whose sum is σ = 138568963456. Its totient is φ = 112960280160.

The previous prime is 125517064501. The next prime is 125517064559. The reversal of 125517064543 is 345460715521.

It is not a de Polignac number, because 125517064543 - 2³³ = 116927129951 is a prime.

It is a super-3 number, since 3×125517064543³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

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 125517064543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125517061543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100528 + ... + 511018.

It is an arithmetic number, because the mean of its divisors is an integer number (8660560216).

Almost surely, 2^125517064543 is an apocalyptic number.

125517064543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125517064543 is a deficient number, since it is larger than the sum of its proper divisors (13051898913).

125517064543 is a wasteful number, since it uses less digits than its factorization.

125517064543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411094.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 125517064543 in words is "one hundred twenty-five billion, five hundred seventeen million, sixty-four thousand, five hundred forty-three".