2555256076521 has 16 divisors (see below), whose sum is σ = 3415157987328. Its totient is φ = 1699429677200.

The previous prime is 2555256076519. The next prime is 2555256076543. The reversal of 2555256076521 is 1256706525552.

It is a cyclic number.

It is not a de Polignac number, because 2555256076521 - 2¹ = 2555256076519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2555256078521) 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, 20199550 + ... + 20325656.

It is an arithmetic number, because the mean of its divisors is an integer number (213447374208).

Almost surely, 2^{2555256076521} is an apocalyptic number.

It is an amenable number.

2555256076521 is a deficient number, since it is larger than the sum of its proper divisors (859901910807).

2555256076521 is a wasteful number, since it uses less digits than its factorization.

2555256076521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142212.

The product of its (nonzero) digits is 6300000, while the sum is 51.

The spelling of 2555256076521 in words is "two trillion, five hundred fifty-five billion, two hundred fifty-six million, seventy-six thousand, five hundred twenty-one".