51500534425 has 6 divisors (see below), whose sum is σ = 63860662718. Its totient is φ = 41200427520.

The previous prime is 51500534399. The next prime is 51500534473. The reversal of 51500534425 is 52443500515.

It can be written as a sum of positive squares in 3 ways, for example, as 12894965136 + 38605569289 = 113556^2 + 196483^2 .

It is not a de Polignac number, because 51500534425 - 2⁹ = 51500533913 is a prime.

It is a super-2 number, since 2×51500534425² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1030010664 + ... + 1030010713.

Almost surely, 2^51500534425 is an apocalyptic number.

It is an amenable number.

51500534425 is a deficient number, since it is larger than the sum of its proper divisors (12360128293).

51500534425 is a wasteful number, since it uses less digits than its factorization.

51500534425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060021387 (or 2060021382 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 51500534425 in words is "fifty-one billion, five hundred million, five hundred thirty-four thousand, four hundred twenty-five".