51020425255 has 16 divisors (see below), whose sum is σ = 62384859360. Its totient is φ = 40048570368.

The previous prime is 51020425243. The next prime is 51020425259. The reversal of 51020425255 is 55252402015.

It is a happy number.

51020425255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51020425255 - 2¹⁷ = 51020294183 is a prime.

It is a super-3 number, since 3×51020425255³ (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 (51020425259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291685 + ... + 432574.

It is an arithmetic number, because the mean of its divisors is an integer number (3899053710).

Almost surely, 2^51020425255 is an apocalyptic number.

51020425255 is a deficient number, since it is larger than the sum of its proper divisors (11364434105).

51020425255 is a wasteful number, since it uses less digits than its factorization.

51020425255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724530.

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 51020425255 in words is "fifty-one billion, twenty million, four hundred twenty-five thousand, two hundred fifty-five".