51008418725 has 24 divisors (see below), whose sum is σ = 69358066752. Its totient is φ = 36904780800.

The previous prime is 51008418709. The next prime is 51008418731. The reversal of 51008418725 is 52781480015.

It is not a de Polignac number, because 51008418725 - 2⁴ = 51008418709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 427457 + ... + 533606.

It is an arithmetic number, because the mean of its divisors is an integer number (2889919448).

Almost surely, 2^51008418725 is an apocalyptic number.

51008418725 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51008418725 is a deficient number, since it is larger than the sum of its proper divisors (18349648027).

51008418725 is a wasteful number, since it uses less digits than its factorization.

51008418725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961277 (or 961272 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 41.

The spelling of 51008418725 in words is "fifty-one billion, eight million, four hundred eighteen thousand, seven hundred twenty-five".