51725406943 has 4 divisors (see below), whose sum is σ = 59114750800. Its totient is φ = 44336063088.

The previous prime is 51725406923. The next prime is 51725406947. The reversal of 51725406943 is 34960452715.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51725406943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51725406893 and 51725406902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51725406947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3694671918 + ... + 3694671931.

It is an arithmetic number, because the mean of its divisors is an integer number (14778687700).

Almost surely, 2^51725406943 is an apocalyptic number.

51725406943 is a deficient number, since it is larger than the sum of its proper divisors (7389343857).

51725406943 is an equidigital number, since it uses as much as digits as its factorization.

51725406943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7389343856.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 51725406943 in words is "fifty-one billion, seven hundred twenty-five million, four hundred six thousand, nine hundred forty-three".