4251081253 has 4 divisors (see below), whose sum is σ = 4251407148. Its totient is φ = 4250755360.

The previous prime is 4251081229. The next prime is 4251081259. The reversal of 4251081253 is 3521801524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1117096929 + 3133984324 = 33423^2 + 55982^2 .

It is a cyclic number.

It is not a de Polignac number, because 4251081253 - 2⁵ = 4251081221 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251081259) 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 3 ways as a sum of consecutive naturals, for example, 142528 + ... + 169753.

It is an arithmetic number, because the mean of its divisors is an integer number (1062851787).

Almost surely, 2^4251081253 is an apocalyptic number.

It is an amenable number.

4251081253 is a deficient number, since it is larger than the sum of its proper divisors (325895).

4251081253 is a wasteful number, since it uses less digits than its factorization.

4251081253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325894.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 4251081253 is about 65200.3163565945. The cubic root of 4251081253 is about 1619.9432552648.

Adding to 4251081253 its reverse (3521801524), we get a palindrome (7772882777).

The spelling of 4251081253 in words is "four billion, two hundred fifty-one million, eighty-one thousand, two hundred fifty-three".