125209199616 has 88 divisors (see below), whose sum is σ = 339385067040. Its totient is φ = 41028943872.

The previous prime is 125209199573. The next prime is 125209199617. The reversal of 125209199616 is 616991902521.

It is not an unprimeable number, because it can be changed into a prime (125209199617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164161 + ... + 526656.

Almost surely, 2^125209199616 is an apocalyptic number.

125209199616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125209199616 is an abundant number, since it is smaller than the sum of its proper divisors (214175867424).

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

125209199616 is an equidigital number, since it uses as much as digits as its factorization.

125209199616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690899 (or 690881 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 51.

The spelling of 125209199616 in words is "one hundred twenty-five billion, two hundred nine million, one hundred ninety-nine thousand, six hundred sixteen".