125788764507 has 24 divisors (see below), whose sum is σ = 195141851136. Its totient is φ = 71864221968.

The previous prime is 125788764461. The next prime is 125788764623. The reversal of 125788764507 is 705467887521.

It is not a de Polignac number, because 125788764507 - 2¹¹ = 125788762459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125788765507) 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 23 ways as a sum of consecutive naturals, for example, 633478 + ... + 808004.

It is an arithmetic number, because the mean of its divisors is an integer number (8130910464).

Almost surely, 2^125788764507 is an apocalyptic number.

125788764507 is a deficient number, since it is larger than the sum of its proper divisors (69353086629).

125788764507 is a wasteful number, since it uses less digits than its factorization.

125788764507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179447 (or 179440 counting only the distinct ones).

The product of its (nonzero) digits is 26342400, while the sum is 60.

The spelling of 125788764507 in words is "one hundred twenty-five billion, seven hundred eighty-eight million, seven hundred sixty-four thousand, five hundred seven".