125127515015 has 24 divisors (see below), whose sum is σ = 160252531920. Its totient is φ = 93767819904.

The previous prime is 125127515011. The next prime is 125127515033. The reversal of 125127515015 is 510515721521.

It is not a de Polignac number, because 125127515015 - 2² = 125127515011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125127515011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228809 + ... + 550098.

It is an arithmetic number, because the mean of its divisors is an integer number (6677188830).

Almost surely, 2^125127515015 is an apocalyptic number.

125127515015 is a deficient number, since it is larger than the sum of its proper divisors (35125016905).

125127515015 is an equidigital number, since it uses as much as digits as its factorization.

125127515015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779039 (or 779020 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 35.

The spelling of 125127515015 in words is "one hundred twenty-five billion, one hundred twenty-seven million, five hundred fifteen thousand, fifteen".