2565005455 has 4 divisors (see below), whose sum is σ = 3078006552. Its totient is φ = 2052004360.

The previous prime is 2565005449. The next prime is 2565005459. The reversal of 2565005455 is 5545005652.

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

It is not a de Polignac number, because 2565005455 - 2³ = 2565005447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565005459) 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, 256500541 + ... + 256500550.

It is an arithmetic number, because the mean of its divisors is an integer number (769501638).

Almost surely, 2^2565005455 is an apocalyptic number.

2565005455 is a deficient number, since it is larger than the sum of its proper divisors (513001097).

2565005455 is an equidigital number, since it uses as much as digits as its factorization.

2565005455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513001096.

The product of its (nonzero) digits is 150000, while the sum is 37.

The square root of 2565005455 is about 50645.8829027592. The cubic root of 2565005455 is about 1368.8717610105.

The spelling of 2565005455 in words is "two billion, five hundred sixty-five million, five thousand, four hundred fifty-five".