2545766565 has 8 divisors (see below), whose sum is σ = 4073226528. Its totient is φ = 1357742160.

The previous prime is 2545766563. The next prime is 2545766567. The reversal of 2545766565 is 5656675452.

It is an interprime number because it is at equal distance from previous prime (2545766563) and next prime (2545766567).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2545766565 - 2¹ = 2545766563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545766563) 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 7 ways as a sum of consecutive naturals, for example, 84858871 + ... + 84858900.

It is an arithmetic number, because the mean of its divisors is an integer number (509153316).

Almost surely, 2^2545766565 is an apocalyptic number.

It is an amenable number.

2545766565 is a deficient number, since it is larger than the sum of its proper divisors (1527459963).

2545766565 is a wasteful number, since it uses less digits than its factorization.

2545766565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169717779.

The product of its digits is 7560000, while the sum is 51.

The square root of 2545766565 is about 50455.5900272705. The cubic root of 2545766565 is about 1365.4407491349.

The spelling of 2545766565 in words is "two billion, five hundred forty-five million, seven hundred sixty-six thousand, five hundred sixty-five".