2565106945554 has 32 divisors (see below), whose sum is σ = 5146887723264. Its totient is φ = 852256978560.

The previous prime is 2565106945537. The next prime is 2565106945607. The reversal of 2565106945554 is 4555496015652.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2565106945494 and 2565106945503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57577872 + ... + 57622404.

It is an arithmetic number, because the mean of its divisors is an integer number (160840241352).

Almost surely, 2^{2565106945554} is an apocalyptic number.

2565106945554 is an abundant number, since it is smaller than the sum of its proper divisors (2581780777710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2565106945554 is a wasteful number, since it uses less digits than its factorization.

2565106945554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75522.

The product of its (nonzero) digits is 32400000, while the sum is 57.

The spelling of 2565106945554 in words is "two trillion, five hundred sixty-five billion, one hundred six million, nine hundred forty-five thousand, five hundred fifty-four".