2565650065 has 16 divisors (see below), whose sum is σ = 3384317376. Its totient is φ = 1851678400.

The previous prime is 2565650029. The next prime is 2565650077. The reversal of 2565650065 is 5600565652.

2565650065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2565650065 - 2¹³ = 2565641873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170842 + ... + 185251.

It is an arithmetic number, because the mean of its divisors is an integer number (211519836).

Almost surely, 2^2565650065 is an apocalyptic number.

It is an amenable number.

2565650065 is a deficient number, since it is larger than the sum of its proper divisors (818667311).

2565650065 is a wasteful number, since it uses less digits than its factorization.

2565650065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356240.

The product of its (nonzero) digits is 270000, while the sum is 40.

The square root of 2565650065 is about 50652.2463963840. The cubic root of 2565650065 is about 1368.9864215228.

The spelling of 2565650065 in words is "two billion, five hundred sixty-five million, six hundred fifty thousand, sixty-five".