51225213112 has 64 divisors (see below), whose sum is σ = 103076438400. Its totient is φ = 23793264000.

The previous prime is 51225213079. The next prime is 51225213113. The reversal of 51225213112 is 21131252215.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51225213113) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3060687 + ... + 3077377.

It is an arithmetic number, because the mean of its divisors is an integer number (1610569350).

Almost surely, 2^51225213112 is an apocalyptic number.

It is an amenable number.

51225213112 is an abundant number, since it is smaller than the sum of its proper divisors (51851225288).

51225213112 is a wasteful number, since it uses less digits than its factorization.

51225213112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17108 (or 17104 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

Adding to 51225213112 its reverse (21131252215), we get a palindrome (72356465327).

The spelling of 51225213112 in words is "fifty-one billion, two hundred twenty-five million, two hundred thirteen thousand, one hundred twelve".