4251205445 has 32 divisors (see below), whose sum is σ = 5427665280. Its totient is φ = 3187537920.

The previous prime is 4251205421. The next prime is 4251205447. The reversal of 4251205445 is 5445021524.

It is not a de Polignac number, because 4251205445 - 2³⁰ = 3177463621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251205447) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4350797 + ... + 4351773.

It is an arithmetic number, because the mean of its divisors is an integer number (169614540).

Almost surely, 2^4251205445 is an apocalyptic number.

It is an amenable number.

4251205445 is a deficient number, since it is larger than the sum of its proper divisors (1176459835).

4251205445 is a wasteful number, since it uses less digits than its factorization.

4251205445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445.

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 4251205445 is about 65201.2687376557. The cubic root of 4251205445 is about 1619.9590302345.

Adding to 4251205445 its reverse (5445021524), we get a palindrome (9696226969).

The spelling of 4251205445 in words is "four billion, two hundred fifty-one million, two hundred five thousand, four hundred forty-five".