125181673207 has 4 divisors (see below), whose sum is σ = 126421095816. Its totient is φ = 123942250600.

The previous prime is 125181673187. The next prime is 125181673237. The reversal of 125181673207 is 702376181521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702376181521 = 7 ⋅100339454503.

It is a cyclic number.

It is not a de Polignac number, because 125181673207 - 2⁷ = 125181673079 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 (125181673237) 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, 619711153 + ... + 619711354.

It is an arithmetic number, because the mean of its divisors is an integer number (31605273954).

Almost surely, 2^125181673207 is an apocalyptic number.

125181673207 is a deficient number, since it is larger than the sum of its proper divisors (1239422609).

125181673207 is a wasteful number, since it uses less digits than its factorization.

125181673207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239422608.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 125181673207 in words is "one hundred twenty-five billion, one hundred eighty-one million, six hundred seventy-three thousand, two hundred seven".