51797873925 has 336 divisors, whose sum is σ = 116579205120. Its totient is φ = 22309499520.

The previous prime is 51797873923. The next prime is 51797873947. The reversal of 51797873925 is 52937879715.

51797873925 is a `hidden beast` number, since 5 + 179 + 78 + 7 + 392 + 5 = 666.

It is not a de Polignac number, because 51797873925 - 2¹ = 51797873923 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (33339600) is a multiple of the sum of its prime factors (324).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51797873923) by changing a digit.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 372646506 + ... + 372646644.

It is an arithmetic number, because the mean of its divisors is an integer number (346961920).

Almost surely, 2^51797873925 is an apocalyptic number.

It is an amenable number.

51797873925 is an abundant number, since it is smaller than the sum of its proper divisors (64781331195).

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

51797873925 is a wasteful number, since it uses less digits than its factorization.

51797873925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 304 counting only the distinct ones).

The product of its digits is 33339600, while the sum is 63.

The spelling of 51797873925 in words is "fifty-one billion, seven hundred ninety-seven million, eight hundred seventy-three thousand, nine hundred twenty-five".