125508842500 has 30 divisors (see below), whose sum is σ = 274462742246. Its totient is φ = 50203536000.

The previous prime is 125508842497. The next prime is 125508842533. The reversal of 125508842500 is 5248805521.

It can be written as a sum of positive squares in 5 ways, for example, as 50406536196 + 75102306304 = 224514^2 + 274048^2 .

It is an unprimeable number.

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 in 9 ways as a sum of consecutive naturals, for example, 25099269 + ... + 25104268.

Almost surely, 2^125508842500 is an apocalyptic number.

125508842500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125508842500 is an abundant number, since it is smaller than the sum of its proper divisors (148953899746).

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

125508842500 is an equidigital number, since it uses as much as digits as its factorization.

125508842500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50203561 (or 50203544 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 40.

The spelling of 125508842500 in words is "one hundred twenty-five billion, five hundred eight million, eight hundred forty-two thousand, five hundred".