51115000325 has 96 divisors (see below), whose sum is σ = 73581540480. Its totient is φ = 34974720000.

The previous prime is 51115000309. The next prime is 51115000333. The reversal of 51115000325 is 52300051115.

It is a happy number.

It is not a de Polignac number, because 51115000325 - 2⁴ = 51115000309 is a prime.

It is a super-2 number, since 2×51115000325² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51115000325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20194310 + ... + 20196840.

It is an arithmetic number, because the mean of its divisors is an integer number (766474380).

Almost surely, 2^51115000325 is an apocalyptic number.

It is an amenable number.

51115000325 is a deficient number, since it is larger than the sum of its proper divisors (22466540155).

51115000325 is a wasteful number, since it uses less digits than its factorization.

51115000325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679 (or 2674 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The spelling of 51115000325 in words is "fifty-one billion, one hundred fifteen million, three hundred twenty-five", and thus it is an aban number.