51060320125 has 8 divisors (see below), whose sum is σ = 63723279672. Its totient is φ = 40848256000.

The previous prime is 51060320123. The next prime is 51060320159. The reversal of 51060320125 is 52102306015.

It can be written as a sum of positive squares in 4 ways, for example, as 9972219321 + 41088100804 = 99861^2 + 202702^2 .

It is not a de Polignac number, because 51060320125 - 2¹ = 51060320123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51060320125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51060320123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204241156 + ... + 204241405.

It is an arithmetic number, because the mean of its divisors is an integer number (7965409959).

Almost surely, 2^51060320125 is an apocalyptic number.

It is an amenable number.

51060320125 is a deficient number, since it is larger than the sum of its proper divisors (12662959547).

51060320125 is an equidigital number, since it uses as much as digits as its factorization.

51060320125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408482576 (or 408482566 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 51060320125 in words is "fifty-one billion, sixty million, three hundred twenty thousand, one hundred twenty-five".