125171015140 has 12 divisors (see below), whose sum is σ = 262859131836. Its totient is φ = 50068406048.

The previous prime is 125171015131. The next prime is 125171015141. The reversal of 125171015140 is 41510171521.

It can be written as a sum of positive squares in 2 ways, for example, as 19523913984 + 105647101156 = 139728^2 + 325034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 125171015099 and 125171015108.

It is not an unprimeable number, because it can be changed into a prime (125171015141) 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, 3129275359 + ... + 3129275398.

It is an arithmetic number, because the mean of its divisors is an integer number (21904927653).

Almost surely, 2^125171015140 is an apocalyptic number.

125171015140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125171015140 is an abundant number, since it is smaller than the sum of its proper divisors (137688116696).

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

125171015140 is a wasteful number, since it uses less digits than its factorization.

125171015140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6258550766 (or 6258550764 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 28.

Adding to 125171015140 its reverse (41510171521), we get a palindrome (166681186661).

The spelling of 125171015140 in words is "one hundred twenty-five billion, one hundred seventy-one million, fifteen thousand, one hundred forty".