2255605645 has 16 divisors (see below), whose sum is σ = 2964774960. Its totient is φ = 1639773184.

The previous prime is 2255605643. The next prime is 2255605739. The reversal of 2255605645 is 5465065522.

It can be written as a sum of positive squares in 8 ways, for example, as 11309769 + 2244295876 = 3363^2 + 47374^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255605645 - 2¹ = 2255605643 is a prime.

It is a super-3 number, since 3×2255605645³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2255605598 and 2255605607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255605643) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 455062 + ... + 459991.

It is an arithmetic number, because the mean of its divisors is an integer number (185298435).

Almost surely, 2^2255605645 is an apocalyptic number.

It is an amenable number.

2255605645 is a deficient number, since it is larger than the sum of its proper divisors (709169315).

2255605645 is a wasteful number, since it uses less digits than its factorization.

2255605645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915104.

The product of its (nonzero) digits is 360000, while the sum is 40.

The square root of 2255605645 is about 47493.2168314592. The cubic root of 2255605645 is about 1311.4580128394.

The spelling of 2255605645 in words is "two billion, two hundred fifty-five million, six hundred five thousand, six hundred forty-five".