125810021932 has 72 divisors (see below), whose sum is σ = 257217871680. Its totient is φ = 53686563840.

The previous prime is 125810021899. The next prime is 125810021969. The reversal of 125810021932 is 239120018521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66600444 + ... + 66602332.

It is an arithmetic number, because the mean of its divisors is an integer number (3572470440).

Almost surely, 2^125810021932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125810021932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128608935840).

125810021932 is an abundant number, since it is smaller than the sum of its proper divisors (131407849748).

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

125810021932 is a wasteful number, since it uses less digits than its factorization.

125810021932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191 (or 3182 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 125810021932 in words is "one hundred twenty-five billion, eight hundred ten million, twenty-one thousand, nine hundred thirty-two".