2565445416 has 16 divisors (see below), whose sum is σ = 6413613600. Its totient is φ = 855148464.

The previous prime is 2565445409. The next prime is 2565445429. The reversal of 2565445416 is 6145445652.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53446756 + ... + 53446803.

It is an arithmetic number, because the mean of its divisors is an integer number (400850850).

Almost surely, 2^2565445416 is an apocalyptic number.

It is an amenable number.

2565445416 is an abundant number, since it is smaller than the sum of its proper divisors (3848168184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2565445416 is a wasteful number, since it uses less digits than its factorization.

2565445416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106893568 (or 106893564 counting only the distinct ones).

The product of its digits is 576000, while the sum is 42.

The square root of 2565445416 is about 50650.2262186459. The cubic root of 2565445416 is about 1368.9500215014.

The spelling of 2565445416 in words is "two billion, five hundred sixty-five million, four hundred forty-five thousand, four hundred sixteen".