2265664801 has 3 divisors (see below), whose sum is σ = 2265712401. Its totient is φ = 2265617202.

The previous prime is 2265664799. The next prime is 2265664811. The reversal of 2265664801 is 1084665622.

The square root of 2265664801 is 47599.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1084665622 = 2 ⋅542332811.

It is not a de Polignac number, because 2265664801 - 2¹ = 2265664799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2265664811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23800 + ... + 71398.

It is an arithmetic number, because the mean of its divisors is an integer number (755237467).

Almost surely, 2^2265664801 is an apocalyptic number.

2265664801 is the 47599-th square number.

2265664801 is the 23800-th centered octagonal number.

It is an amenable number.

2265664801 is a deficient number, since it is larger than the sum of its proper divisors (47600).

2265664801 is an frugal number, since it uses more digits than its factorization.

2265664801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95198 (or 47599 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The cubic root of 2265664801 is about 1313.4046590410.

The spelling of 2265664801 in words is "two billion, two hundred sixty-five million, six hundred sixty-four thousand, eight hundred one".