2565567573 has 4 divisors (see below), whose sum is σ = 3420756768. Its totient is φ = 1710378380.

The previous prime is 2565567539. The next prime is 2565567577. The reversal of 2565567573 is 3757655652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2565567573 - 2⁶ = 2565567509 is a prime.

It is a super-2 number, since 2×2565567573² = 13164273943258220658, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565567577) 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, 427594593 + ... + 427594598.

It is an arithmetic number, because the mean of its divisors is an integer number (855189192).

Almost surely, 2^2565567573 is an apocalyptic number.

It is an amenable number.

2565567573 is a deficient number, since it is larger than the sum of its proper divisors (855189195).

2565567573 is an equidigital number, since it uses as much as digits as its factorization.

2565567573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855189194.

The product of its digits is 6615000, while the sum is 51.

The square root of 2565567573 is about 50651.4320922913. The cubic root of 2565567573 is about 1368.9717492649.

The spelling of 2565567573 in words is "two billion, five hundred sixty-five million, five hundred sixty-seven thousand, five hundred seventy-three".