2565445415 has 64 divisors (see below), whose sum is σ = 3657830400. Its totient is φ = 1711041024.

The previous prime is 2565445409. The next prime is 2565445429. The reversal of 2565445415 is 5145445652.

It is not a de Polignac number, because 2565445415 - 2¹⁶ = 2565379879 is a prime.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2037056 + ... + 2038314.

It is an arithmetic number, because the mean of its divisors is an integer number (57153600).

Almost surely, 2^2565445415 is an apocalyptic number.

2565445415 is a deficient number, since it is larger than the sum of its proper divisors (1092384985).

2565445415 is a wasteful number, since it uses less digits than its factorization.

2565445415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its digits is 480000, while the sum is 41.

The square root of 2565445415 is about 50650.2262087742. The cubic root of 2565445415 is about 1368.9500213236.

The spelling of 2565445415 in words is "two billion, five hundred sixty-five million, four hundred forty-five thousand, four hundred fifteen".