125171227115 has 16 divisors (see below), whose sum is σ = 163885238496. Its totient is φ = 91019884800.

The previous prime is 125171227091. The next prime is 125171227123. The reversal of 125171227115 is 511722171521.

It is a de Polignac number, because none of the positive numbers 2^k-125171227115 is a prime.

It is a super-2 number, since 2×125171227115² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203549 + ... + 540161.

It is an arithmetic number, because the mean of its divisors is an integer number (10242827406).

Almost surely, 2^125171227115 is an apocalyptic number.

125171227115 is a deficient number, since it is larger than the sum of its proper divisors (38714011381).

125171227115 is a wasteful number, since it uses less digits than its factorization.

125171227115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343390.

The product of its digits is 9800, while the sum is 35.

Adding to 125171227115 its reverse (511722171521), we get a palindrome (636893398636).

The spelling of 125171227115 in words is "one hundred twenty-five billion, one hundred seventy-one million, two hundred twenty-seven thousand, one hundred fifteen".