2105254505 has 8 divisors (see below), whose sum is σ = 2554691400. Its totient is φ = 1665279616.

The previous prime is 2105254493. The next prime is 2105254513. The reversal of 2105254505 is 5054525012.

It can be written as a sum of positive squares in 4 ways, for example, as 10086976 + 2095167529 = 3176^2 + 45773^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2105254505 - 2¹² = 2105250409 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365010 + ... + 2365899.

It is an arithmetic number, because the mean of its divisors is an integer number (319336425).

Almost surely, 2^2105254505 is an apocalyptic number.

It is an amenable number.

2105254505 is a deficient number, since it is larger than the sum of its proper divisors (449436895).

2105254505 is an equidigital number, since it uses as much as digits as its factorization.

2105254505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731003.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 2105254505 is about 45883.0524812811. The cubic root of 2105254505 is about 1281.6463404257.

Adding to 2105254505 its reverse (5054525012), we get a palindrome (7159779517).

It can be divided in two parts, 21052 and 54505, that added together give a palindrome (75557).

The spelling of 2105254505 in words is "two billion, one hundred five million, two hundred fifty-four thousand, five hundred five".