255012255222021 has 72 divisors (see below), whose sum is σ = 426898263261600. Its totient is φ = 145450348807680.

The previous prime is 255012255222019. The next prime is 255012255222041. The reversal of 255012255222021 is 120222552210552.

It is a happy number.

255012255222021 is a `hidden beast` number, since 2 + 5 + 5 + 0 + 122 + 5 + 522 + 2 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 255012255222021 - 2¹ = 255012255222019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255012255222041) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 379017135 + ... + 379689363.

It is an arithmetic number, because the mean of its divisors is an integer number (5929142545300).

Almost surely, 2^{255012255222021} is an apocalyptic number.

It is an amenable number.

255012255222021 is a deficient number, since it is larger than the sum of its proper divisors (171886008039579).

255012255222021 is a wasteful number, since it uses less digits than its factorization.

255012255222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685539 (or 685519 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 255012255222021 in words is "two hundred fifty-five trillion, twelve billion, two hundred fifty-five million, two hundred twenty-two thousand, twenty-one".