3645022505 has 4 divisors (see below), whose sum is σ = 4374027012. Its totient is φ = 2916018000.

The previous prime is 3645022483. The next prime is 3645022553. The reversal of 3645022505 is 5052205463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5052205463 = 433 ⋅11667911.

It can be written as a sum of positive squares in 2 ways, for example, as 2045662441 + 1599360064 = 45229^2 + 39992^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3645022505 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 364502246 + ... + 364502255.

It is an arithmetic number, because the mean of its divisors is an integer number (1093506753).

Almost surely, 2^3645022505 is an apocalyptic number.

It is an amenable number.

3645022505 is a deficient number, since it is larger than the sum of its proper divisors (729004507).

3645022505 is an equidigital number, since it uses as much as digits as its factorization.

3645022505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729004506.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 3645022505 is about 60374.0217726134. The cubic root of 3645022505 is about 1538.9815193283.

Adding to 3645022505 its reverse (5052205463), we get a palindrome (8697227968).

The spelling of 3645022505 in words is "three billion, six hundred forty-five million, twenty-two thousand, five hundred five".