125502353556543 has 80 divisors (see below), whose sum is σ = 205972167557376. Its totient is φ = 75811506094080.

The previous prime is 125502353556511. The next prime is 125502353556557. The reversal of 125502353556543 is 345655353205521.

125502353556543 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 0 + 2 + 3 + 5 + 35 + 565 + 43 = 666.

It is not a de Polignac number, because 125502353556543 - 2⁵ = 125502353556511 is a prime.

It is a super-2 number, since 2×125502353556543² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125502353556543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125502353556043) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 621855 + ... + 15855327.

Almost surely, 2^{125502353556543} is an apocalyptic number.

125502353556543 is a deficient number, since it is larger than the sum of its proper divisors (80469814000833).

125502353556543 is a wasteful number, since it uses less digits than its factorization.

125502353556543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15233726 (or 15233717 counting only the distinct ones).

The product of its (nonzero) digits is 40500000, while the sum is 54.

The spelling of 125502353556543 in words is "one hundred twenty-five trillion, five hundred two billion, three hundred fifty-three million, five hundred fifty-six thousand, five hundred forty-three".