125938518806 has 4 divisors (see below), whose sum is σ = 188907778212. Its totient is φ = 62969259402.

The previous prime is 125938518803. The next prime is 125938518817. The reversal of 125938518806 is 608815839521.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125938518803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31484629700 + ... + 31484629703.

It is an arithmetic number, because the mean of its divisors is an integer number (47226944553).

Almost surely, 2^125938518806 is an apocalyptic number.

125938518806 is a deficient number, since it is larger than the sum of its proper divisors (62969259406).

125938518806 is an equidigital number, since it uses as much as digits as its factorization.

125938518806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62969259405.

The product of its (nonzero) digits is 4147200, while the sum is 56.

The spelling of 125938518806 in words is "one hundred twenty-five billion, nine hundred thirty-eight million, five hundred eighteen thousand, eight hundred six".