51225233280 has 512 divisors, whose sum is σ = 182930227200. Its totient is φ = 12107612160.

The previous prime is 51225233263. The next prime is 51225233299. The reversal of 51225233280 is 8233252215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184928502 + ... + 184928778.

It is an arithmetic number, because the mean of its divisors is an integer number (357285600).

Almost surely, 2^51225233280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51225233280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91465113600).

51225233280 is an abundant number, since it is smaller than the sum of its proper divisors (131704993920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51225233280 is a wasteful number, since it uses less digits than its factorization.

51225233280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 51225233280 its reverse (8233252215), we get a palindrome (59458485495).

The spelling of 51225233280 in words is "fifty-one billion, two hundred twenty-five million, two hundred thirty-three thousand, two hundred eighty".