51543212225 has 12 divisors (see below), whose sum is σ = 64867519344. Its totient is φ = 40619127120.

The previous prime is 51543212219. The next prime is 51543212233. The reversal of 51543212225 is 52221234515.

It is not a de Polignac number, because 51543212225 - 2⁸ = 51543211969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51543212191 and 51543212200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15384359 + ... + 15387708.

It is an arithmetic number, because the mean of its divisors is an integer number (5405626612).

Almost surely, 2^51543212225 is an apocalyptic number.

It is an amenable number.

51543212225 is a deficient number, since it is larger than the sum of its proper divisors (13324307119).

51543212225 is a wasteful number, since it uses less digits than its factorization.

51543212225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30772144 (or 30772139 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The spelling of 51543212225 in words is "fifty-one billion, five hundred forty-three million, two hundred twelve thousand, two hundred twenty-five".