51910944255625 has 135 divisors (see below), whose sum is σ = 81735412519827. Its totient is φ = 32847541272000.

The previous prime is 51910944255623. The next prime is 51910944255647. The reversal of 51910944255625 is 52655244901915.

The square root of 51910944255625 is 7204925.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 51274006184569 + 636938071056 = 7160587^2 + 798084^2 .

It is not a de Polignac number, because 51910944255625 - 2¹ = 51910944255623 is a prime.

It is a super-2 number, since 2×51910944255625² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51910944255625.

It is not an unprimeable number, because it can be changed into a prime (51910944255623) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 16391202792 + ... + 16391205958.

Almost surely, 2^{51910944255625} is an apocalyptic number.

51910944255625 is the 7204925-th square number.

51910944255625 is the 3602463-rd centered octagonal number.

It is an amenable number.

51910944255625 is a deficient number, since it is larger than the sum of its proper divisors (29824468264202).

51910944255625 is an frugal number, since it uses more digits than its factorization.

51910944255625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6394 (or 3192 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 58.

The spelling of 51910944255625 in words is "fifty-one trillion, nine hundred ten billion, nine hundred forty-four million, two hundred fifty-five thousand, six hundred twenty-five".