51025235505 has 32 divisors (see below), whose sum is σ = 82295568000. Its totient is φ = 26995540992.

The previous prime is 51025235489. The next prime is 51025235533. The reversal of 51025235505 is 50553252015.

It is not a de Polignac number, because 51025235505 - 2⁴ = 51025235489 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 1744441 + ... + 1773449.

It is an arithmetic number, because the mean of its divisors is an integer number (2571736500).

Almost surely, 2^51025235505 is an apocalyptic number.

It is an amenable number.

51025235505 is a deficient number, since it is larger than the sum of its proper divisors (31270332495).

51025235505 is a wasteful number, since it uses less digits than its factorization.

51025235505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29953.

The product of its (nonzero) digits is 37500, while the sum is 33.

The spelling of 51025235505 in words is "fifty-one billion, twenty-five million, two hundred thirty-five thousand, five hundred five".