2265561265 has 16 divisors (see below), whose sum is σ = 2974397760. Its totient is φ = 1642918720.

The previous prime is 2265561169. The next prime is 2265561269. The reversal of 2265561265 is 5621655622.

It is not a de Polignac number, because 2265561265 - 2⁹ = 2265560753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2265561269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40270 + ... + 78439.

It is an arithmetic number, because the mean of its divisors is an integer number (185899860).

Almost surely, 2^2265561265 is an apocalyptic number.

It is an amenable number.

2265561265 is a deficient number, since it is larger than the sum of its proper divisors (708836495).

2265561265 is a wasteful number, since it uses less digits than its factorization.

2265561265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119072.

The product of its digits is 216000, while the sum is 40.

The square root of 2265561265 is about 47597.9124017010. The cubic root of 2265561265 is about 1313.3846521485.

The spelling of 2265561265 in words is "two billion, two hundred sixty-five million, five hundred sixty-one thousand, two hundred sixty-five".