125376673521 has 16 divisors (see below), whose sum is σ = 182917041408. Its totient is φ = 75756291600.

The previous prime is 125376673519. The next prime is 125376673571.

125376673521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 125376673521 - 2¹ = 125376673519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125376673571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5728191 + ... + 5750036.

It is an arithmetic number, because the mean of its divisors is an integer number (11432315088).

Almost surely, 2^125376673521 is an apocalyptic number.

125376673521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125376673521 is a deficient number, since it is larger than the sum of its proper divisors (57540367887).

125376673521 is a wasteful number, since it uses less digits than its factorization.

125376673521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11478572.

The product of its digits is 1587600, while the sum is 48.

It can be divided in two parts, 125376 and 673521, that added together give a palindrome (798897).

The spelling of 125376673521 in words is "one hundred twenty-five billion, three hundred seventy-six million, six hundred seventy-three thousand, five hundred twenty-one".