51443434025 has 6 divisors (see below), whose sum is σ = 63789858222. Its totient is φ = 41154747200.

The previous prime is 51443434013. The next prime is 51443434027. The reversal of 51443434025 is 52043434415.

It can be written as a sum of positive squares in 3 ways, for example, as 204304 + 51443229721 = 452^2 + 226811^2 .

It is a de Polignac number, because none of the positive numbers 2^k-51443434025 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51443434027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1028868656 + ... + 1028868705.

It is an arithmetic number, because the mean of its divisors is an integer number (10631643037).

Almost surely, 2^51443434025 is an apocalyptic number.

It is an amenable number.

51443434025 is a deficient number, since it is larger than the sum of its proper divisors (12346424197).

51443434025 is a wasteful number, since it uses less digits than its factorization.

51443434025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057737371 (or 2057737366 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 51443434025 in words is "fifty-one billion, four hundred forty-three million, four hundred thirty-four thousand, twenty-five".