125537500 has 108 divisors (see below), whose sum is σ = 305464824. Its totient is φ = 45100000.

The previous prime is 125537459. The next prime is 125537513. The reversal of 125537500 is 5735521.

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 1512459 + ... + 1512541.

It is an arithmetic number, because the mean of its divisors is an integer number (2828378).

Almost surely, 2^125537500 is an apocalyptic number.

125537500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125537500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152732412).

125537500 is an abundant number, since it is smaller than the sum of its proper divisors (179927324).

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

125537500 is an equidigital number, since it uses as much as digits as its factorization.

125537500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 125537500 is about 11204.3518331048. The cubic root of 125537500 is about 500.7156418914.

The spelling of 125537500 in words is "one hundred twenty-five million, five hundred thirty-seven thousand, five hundred".