51825580137 has 20 divisors (see below), whose sum is σ = 77446913940. Its totient is φ = 34537688064.

The previous prime is 51825580127. The next prime is 51825580151. The reversal of 51825580137 is 73108552815.

51825580137 is a `hidden beast` number, since 5 + 1 + 82 + 558 + 0 + 13 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37445733081 + 14379847056 = 193509^2 + 119916^2 .

It is not a de Polignac number, because 51825580137 - 2⁶ = 51825580073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51825580092 and 51825580101.

It is not an unprimeable number, because it can be changed into a prime (51825580127) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 106789 + ... + 339197.

It is an arithmetic number, because the mean of its divisors is an integer number (3872345697).

Almost surely, 2^51825580137 is an apocalyptic number.

It is an amenable number.

51825580137 is a deficient number, since it is larger than the sum of its proper divisors (25621333803).

51825580137 is a wasteful number, since it uses less digits than its factorization.

51825580137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235174 (or 235165 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 45.

The spelling of 51825580137 in words is "fifty-one billion, eight hundred twenty-five million, five hundred eighty thousand, one hundred thirty-seven".