125107072636 has 144 divisors (see below), whose sum is σ = 276638918976. Its totient is φ = 49211817984.

The previous prime is 125107072633. The next prime is 125107072661. The reversal of 125107072636 is 636270701521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125107072631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224608470 + ... + 224609026.

It is an arithmetic number, because the mean of its divisors is an integer number (1921103604).

Almost surely, 2^125107072636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125107072636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138319459488).

125107072636 is an abundant number, since it is smaller than the sum of its proper divisors (151531846340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125107072636 is an equidigital number, since it uses as much as digits as its factorization.

125107072636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 125107072636 in words is "one hundred twenty-five billion, one hundred seven million, seventy-two thousand, six hundred thirty-six".