125862391780 has 12 divisors (see below), whose sum is σ = 264311022780. Its totient is φ = 50344956704.

The previous prime is 125862391757. The next prime is 125862391789. The reversal of 125862391780 is 87193268521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56785936804 + 69076454976 = 238298^2 + 262824^2 .

It is not an unprimeable number, because it can be changed into a prime (125862391789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3146559775 + ... + 3146559814.

It is an arithmetic number, because the mean of its divisors is an integer number (22025918565).

Almost surely, 2^125862391780 is an apocalyptic number.

125862391780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125862391780 is an abundant number, since it is smaller than the sum of its proper divisors (138448631000).

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

125862391780 is a wasteful number, since it uses less digits than its factorization.

125862391780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6293119598 (or 6293119596 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 125862391780 in words is "one hundred twenty-five billion, eight hundred sixty-two million, three hundred ninety-one thousand, seven hundred eighty".