125661750 has 64 divisors (see below), whose sum is σ = 316293120. Its totient is φ = 33228000.

The previous prime is 125661749. The next prime is 125661791. The reversal of 125661750 is 57166521.

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 31 ways as a sum of consecutive naturals, for example, 97611 + ... + 98889.

It is an arithmetic number, because the mean of its divisors is an integer number (4942080).

Almost surely, 2^125661750 is an apocalyptic number.

125661750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125661750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158146560).

125661750 is an abundant number, since it is smaller than the sum of its proper divisors (190631370).

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

125661750 is a wasteful number, since it uses less digits than its factorization.

125661750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 125661750 is about 11209.8951823824. The cubic root of 125661750 is about 500.8807808724.

The spelling of 125661750 in words is "one hundred twenty-five million, six hundred sixty-one thousand, seven hundred fifty".