2556570025267 has 4 divisors (see below), whose sum is σ = 2559321985320. Its totient is φ = 2553818065216.

The previous prime is 2556570025249. The next prime is 2556570025279. The reversal of 2556570025267 is 7625200756552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2556570025267 - 2³⁵ = 2522210286899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556570020267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375978633 + ... + 1375980490.

It is an arithmetic number, because the mean of its divisors is an integer number (639830496330).

Almost surely, 2^{2556570025267} is an apocalyptic number.

2556570025267 is a deficient number, since it is larger than the sum of its proper divisors (2751960053).

2556570025267 is an equidigital number, since it uses as much as digits as its factorization.

2556570025267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751960052.

The product of its (nonzero) digits is 8820000, while the sum is 52.

The spelling of 2556570025267 in words is "two trillion, five hundred fifty-six billion, five hundred seventy million, twenty-five thousand, two hundred sixty-seven".