125132637499 has 8 divisors (see below), whose sum is σ = 128683350000. Its totient is φ = 121629585792.

The previous prime is 125132637467. The next prime is 125132637503. The reversal of 125132637499 is 994736231521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125132637499 - 2⁵ = 125132637467 is a prime.

It is a super-2 number, since 2×125132637499² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125132637299) 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 7 ways as a sum of consecutive naturals, for example, 11909874 + ... + 11920375.

It is an arithmetic number, because the mean of its divisors is an integer number (16085418750).

Almost surely, 2^125132637499 is an apocalyptic number.

125132637499 is a deficient number, since it is larger than the sum of its proper divisors (3550712501).

125132637499 is an equidigital number, since it uses as much as digits as its factorization.

125132637499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23830397.

The product of its digits is 2449440, while the sum is 52.

The spelling of 125132637499 in words is "one hundred twenty-five billion, one hundred thirty-two million, six hundred thirty-seven thousand, four hundred ninety-nine".