51415208255825 has 12 divisors (see below), whose sum is σ = 63754960314240. Its totient is φ = 41132100748560.

The previous prime is 51415208255821. The next prime is 51415208255881. The reversal of 51415208255825 is 52855280251415.

It is not a de Polignac number, because 51415208255825 - 2² = 51415208255821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51415208255821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19714412 + ... + 22169538.

It is an arithmetic number, because the mean of its divisors is an integer number (5312913359520).

Almost surely, 2^{51415208255825} is an apocalyptic number.

It is an amenable number.

51415208255825 is a deficient number, since it is larger than the sum of its proper divisors (12339752058415).

51415208255825 is a wasteful number, since it uses less digits than its factorization.

51415208255825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292816 (or 3292811 counting only the distinct ones).

The product of its (nonzero) digits is 6400000, while the sum is 53.

The spelling of 51415208255825 in words is "fifty-one trillion, four hundred fifteen billion, two hundred eight million, two hundred fifty-five thousand, eight hundred twenty-five".