51331711525 has 24 divisors (see below), whose sum is σ = 65070192384. Its totient is φ = 40151707200.

The previous prime is 51331711523. The next prime is 51331711547. The reversal of 51331711525 is 52511713315.

It is not a de Polignac number, because 51331711525 - 2¹ = 51331711523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51331711523) 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, 1190239 + ... + 1232611.

It is an arithmetic number, because the mean of its divisors is an integer number (2711258016).

Almost surely, 2^51331711525 is an apocalyptic number.

It is an amenable number.

51331711525 is a deficient number, since it is larger than the sum of its proper divisors (13738480859).

51331711525 is a wasteful number, since it uses less digits than its factorization.

51331711525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43461 (or 43456 counting only the distinct ones).

The product of its digits is 15750, while the sum is 34.

The spelling of 51331711525 in words is "fifty-one billion, three hundred thirty-one million, seven hundred eleven thousand, five hundred twenty-five".