2565454051 has 4 divisors (see below), whose sum is σ = 2565885600. Its totient is φ = 2565022504.

The previous prime is 2565454049. The next prime is 2565454061. The reversal of 2565454051 is 1504545652.

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 2565454051 - 2¹ = 2565454049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2565454051.

It is not an unprimeable number, because it can be changed into a prime (2565454061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206731 + ... + 218788.

It is an arithmetic number, because the mean of its divisors is an integer number (641471400).

Almost surely, 2^2565454051 is an apocalyptic number.

2565454051 is a deficient number, since it is larger than the sum of its proper divisors (431549).

2565454051 is an equidigital number, since it uses as much as digits as its factorization.

2565454051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431548.

The product of its (nonzero) digits is 120000, while the sum is 37.

The square root of 2565454051 is about 50650.3114600493. The cubic root of 2565454051 is about 1368.9515574102.

The spelling of 2565454051 in words is "two billion, five hundred sixty-five million, four hundred fifty-four thousand, fifty-one".