51612013825 has 12 divisors (see below), whose sum is σ = 64382129280. Its totient is φ = 41042364560.

The previous prime is 51612013819. The next prime is 51612013879. The reversal of 51612013825 is 52831021615.

It is not a de Polignac number, because 51612013825 - 2¹⁷ = 51611882753 is a prime.

It is a super-2 number, since 2×51612013825² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6176905 + ... + 6185254.

It is an arithmetic number, because the mean of its divisors is an integer number (5365177440).

Almost surely, 2^51612013825 is an apocalyptic number.

It is an amenable number.

51612013825 is a deficient number, since it is larger than the sum of its proper divisors (12770115455).

51612013825 is a wasteful number, since it uses less digits than its factorization.

51612013825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12362336 (or 12362331 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 51612013825 in words is "fifty-one billion, six hundred twelve million, thirteen thousand, eight hundred twenty-five".