51065161325 has 6 divisors (see below), whose sum is σ = 63320800074. Its totient is φ = 40852129040.

The previous prime is 51065161321. The next prime is 51065161363. The reversal of 51065161325 is 52316156015.

It can be written as a sum of positive squares in 3 ways, for example, as 15738455209 + 35326706116 = 125453^2 + 187954^2 .

It is not a de Polignac number, because 51065161325 - 2² = 51065161321 is a prime.

It is a super-2 number, since 2×51065161325² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51065161321) 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, 1021303202 + ... + 1021303251.

It is an arithmetic number, because the mean of its divisors is an integer number (10553466679).

Almost surely, 2^51065161325 is an apocalyptic number.

It is an amenable number.

51065161325 is a deficient number, since it is larger than the sum of its proper divisors (12255638749).

51065161325 is a wasteful number, since it uses less digits than its factorization.

51065161325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042606463 (or 2042606458 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 51065161325 in words is "fifty-one billion, sixty-five million, one hundred sixty-one thousand, three hundred twenty-five".