125133240667 has 4 divisors (see below), whose sum is σ = 125407055656. Its totient is φ = 124859425680.

The previous prime is 125133240641. The next prime is 125133240679. The reversal of 125133240667 is 766042331521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766042331521 = 23 ⋅33306188327.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125133240667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125133280667) 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 3 ways as a sum of consecutive naturals, for example, 136906809 + ... + 136907722.

It is an arithmetic number, because the mean of its divisors is an integer number (31351763914).

Almost surely, 2^125133240667 is an apocalyptic number.

125133240667 is a deficient number, since it is larger than the sum of its proper divisors (273814989).

125133240667 is an equidigital number, since it uses as much as digits as its factorization.

125133240667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273814988.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 125133240667 in words is "one hundred twenty-five billion, one hundred thirty-three million, two hundred forty thousand, six hundred sixty-seven".