125105780212 has 96 divisors (see below), whose sum is σ = 270413696000. Its totient is φ = 50481488736.

The previous prime is 125105780143. The next prime is 125105780237. The reversal of 125105780212 is 212087501521.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 4234363 + ... + 4263805.

Almost surely, 2^125105780212 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 125105780212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135206848000).

125105780212 is an abundant number, since it is smaller than the sum of its proper divisors (145307915788).

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

125105780212 is a wasteful number, since it uses less digits than its factorization.

125105780212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29650 (or 29634 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 34.

The spelling of 125105780212 in words is "one hundred twenty-five billion, one hundred five million, seven hundred eighty thousand, two hundred twelve".