125403546502543 has 4 divisors (see below), whose sum is σ = 125403603937200. Its totient is φ = 125403489067888.

The previous prime is 125403546502529. The next prime is 125403546502547. The reversal of 125403546502543 is 345205645304521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125403546502543 - 2¹³ = 125403546494351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125403546502547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25307230 + ... + 29854027.

It is an arithmetic number, because the mean of its divisors is an integer number (31350900984300).

Almost surely, 2^{125403546502543} is an apocalyptic number.

125403546502543 is a deficient number, since it is larger than the sum of its proper divisors (57434657).

125403546502543 is an equidigital number, since it uses as much as digits as its factorization.

125403546502543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57434656.

The product of its (nonzero) digits is 8640000, while the sum is 49.

The spelling of 125403546502543 in words is "one hundred twenty-five trillion, four hundred three billion, five hundred forty-six million, five hundred two thousand, five hundred forty-three".