2564260625655 has 64 divisors (see below), whose sum is σ = 4719980016000. Its totient is φ = 1319299301376.

The previous prime is 2564260625629. The next prime is 2564260625737. The reversal of 2564260625655 is 5565260624652.

2564260625655 is a `hidden beast` number, since 2 + 5 + 6 + 4 + 2 + 6 + 0 + 625 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 2564260625655 - 2¹⁴ = 2564260609271 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4229961 + ... + 4798029.

It is an arithmetic number, because the mean of its divisors is an integer number (73749687750).

Almost surely, 2^{2564260625655} is an apocalyptic number.

2564260625655 is a deficient number, since it is larger than the sum of its proper divisors (2155719390345).

2564260625655 is a wasteful number, since it uses less digits than its factorization.

2564260625655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569265 (or 569259 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 54.

The spelling of 2564260625655 in words is "two trillion, five hundred sixty-four billion, two hundred sixty million, six hundred twenty-five thousand, six hundred fifty-five".