125005131502111 has 4 divisors (see below), whose sum is σ = 142863007430992. Its totient is φ = 107147255573232.

The previous prime is 125005131502091. The next prime is 125005131502117. The reversal of 125005131502111 is 111205131500521.

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

It is a de Polignac number, because none of the positive numbers 2^k-125005131502111 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 125005131502111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125005131502117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8928937964430 + ... + 8928937964443.

It is an arithmetic number, because the mean of its divisors is an integer number (35715751857748).

Almost surely, 2^{125005131502111} is an apocalyptic number.

125005131502111 is a deficient number, since it is larger than the sum of its proper divisors (17857875928881).

125005131502111 is an equidigital number, since it uses as much as digits as its factorization.

125005131502111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17857875928880.

The product of its (nonzero) digits is 1500, while the sum is 28.

The spelling of 125005131502111 in words is "one hundred twenty-five trillion, five billion, one hundred thirty-one million, five hundred two thousand, one hundred eleven".