51125053125 has 48 divisors (see below), whose sum is σ = 86600707200. Its totient is φ = 26819400000.

The previous prime is 51125053099. The next prime is 51125053129. The reversal of 51125053125 is 52135052115.

It is not a de Polignac number, because 51125053125 - 2¹⁵ = 51125020357 is a prime.

It is a super-2 number, since 2×51125053125² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51125053092 and 51125053101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51125053129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 527176 + ... + 616574.

It is an arithmetic number, because the mean of its divisors is an integer number (1804181400).

Almost surely, 2^51125053125 is an apocalyptic number.

It is an amenable number.

51125053125 is a deficient number, since it is larger than the sum of its proper divisors (35475654075).

51125053125 is an frugal number, since it uses more digits than its factorization.

51125053125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89488 (or 89468 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 51125053125 in words is "fifty-one billion, one hundred twenty-five million, fifty-three thousand, one hundred twenty-five".