125740561420 has 12 divisors (see below), whose sum is σ = 264055179024. Its totient is φ = 50296224560.

The previous prime is 125740561379. The next prime is 125740561487. The reversal of 125740561420 is 24165047521.

It is a self number, because there is not a number n which added to its sum of digits gives 125740561420.

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 3 ways as a sum of consecutive naturals, for example, 3143514016 + ... + 3143514055.

It is an arithmetic number, because the mean of its divisors is an integer number (22004598252).

Almost surely, 2^125740561420 is an apocalyptic number.

125740561420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125740561420 is an abundant number, since it is smaller than the sum of its proper divisors (138314617604).

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

125740561420 is a wasteful number, since it uses less digits than its factorization.

125740561420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287028080 (or 6287028078 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 125740561420 in words is "one hundred twenty-five billion, seven hundred forty million, five hundred sixty-one thousand, four hundred twenty".