51368806225 has 24 divisors (see below), whose sum is σ = 69544620288. Its totient is φ = 37328683200.

The previous prime is 51368806217. The next prime is 51368806231. The reversal of 51368806225 is 52260886315.

It is not a de Polignac number, because 51368806225 - 2³ = 51368806217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264672 + ... + 415678.

It is an arithmetic number, because the mean of its divisors is an integer number (2897692512).

Almost surely, 2^51368806225 is an apocalyptic number.

51368806225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51368806225 is a deficient number, since it is larger than the sum of its proper divisors (18175814063).

51368806225 is a wasteful number, since it uses less digits than its factorization.

51368806225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152265 (or 152260 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 51368806225 in words is "fifty-one billion, three hundred sixty-eight million, eight hundred six thousand, two hundred twenty-five".