125278619780 has 24 divisors (see below), whose sum is σ = 263091749760. Its totient is φ = 50110181600.

The previous prime is 125278619771. The next prime is 125278619801. The reversal of 125278619780 is 87916872521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1543205 + ... + 1622355.

It is an arithmetic number, because the mean of its divisors is an integer number (10962156240).

Almost surely, 2^125278619780 is an apocalyptic number.

125278619780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125278619780 is an abundant number, since it is smaller than the sum of its proper divisors (137813129980).

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

125278619780 is a wasteful number, since it uses less digits than its factorization.

125278619780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158299 (or 158297 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 125278619780 in words is "one hundred twenty-five billion, two hundred seventy-eight million, six hundred nineteen thousand, seven hundred eighty".