51001320004625 has 8 divisors (see below), whose sum is σ = 63649647365928. Its totient is φ = 40801056003600.

The previous prime is 51001320004487. The next prime is 51001320004633. The reversal of 51001320004625 is 52640002310015.

It can be written as a sum of positive squares in 4 ways, for example, as 5860229065681 + 45141090938944 = 2420791^2 + 6718712^2 .

It is not a de Polignac number, because 51001320004625 - 2¹⁸ = 51001319742481 is a prime.

It is a super-2 number, since 2×51001320004625² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204005279894 + ... + 204005280143.

It is an arithmetic number, because the mean of its divisors is an integer number (7956205920741).

Almost surely, 2^{51001320004625} is an apocalyptic number.

It is an amenable number.

51001320004625 is a deficient number, since it is larger than the sum of its proper divisors (12648327361303).

51001320004625 is an equidigital number, since it uses as much as digits as its factorization.

51001320004625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408010560052 (or 408010560042 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 51001320004625 in words is "fifty-one trillion, one billion, three hundred twenty million, four thousand, six hundred twenty-five".