51228992325 has 48 divisors (see below), whose sum is σ = 97964729856. Its totient is φ = 23136792000.

The previous prime is 51228992317. The next prime is 51228992327. The reversal of 51228992325 is 52329982215.

It is a happy number.

It is not a de Polignac number, because 51228992325 - 2³ = 51228992317 is a prime.

It is a super-3 number, since 3×51228992325³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51228992327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 544251 + ... + 631400.

It is an arithmetic number, because the mean of its divisors is an integer number (2040931872).

Almost surely, 2^51228992325 is an apocalyptic number.

It is an amenable number.

51228992325 is a deficient number, since it is larger than the sum of its proper divisors (46735737531).

51228992325 is a wasteful number, since it uses less digits than its factorization.

51228992325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175754 (or 1175749 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The spelling of 51228992325 in words is "fifty-one billion, two hundred twenty-eight million, nine hundred ninety-two thousand, three hundred twenty-five".