51131534325 has 24 divisors (see below), whose sum is σ = 85970316000. Its totient is φ = 26807943360.

The previous prime is 51131534317. The next prime is 51131534327. The reversal of 51131534325 is 52343513115.

It is not a de Polignac number, because 51131534325 - 2³ = 51131534317 is a prime.

It is a super-2 number, since 2×51131534325² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51131534327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5773150 + ... + 5781999.

It is an arithmetic number, because the mean of its divisors is an integer number (3582096500).

Almost surely, 2^51131534325 is an apocalyptic number.

It is an amenable number.

51131534325 is a deficient number, since it is larger than the sum of its proper divisors (34838781675).

51131534325 is a wasteful number, since it uses less digits than its factorization.

51131534325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11555221 (or 11555216 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

The spelling of 51131534325 in words is "fifty-one billion, one hundred thirty-one million, five hundred thirty-four thousand, three hundred twenty-five".