4425744781 has 4 divisors (see below), whose sum is σ = 4578356700. Its totient is φ = 4273132864.

The previous prime is 4425744769. The next prime is 4425744797. The reversal of 4425744781 is 1874475244.

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 2689355881 + 1736388900 = 51859^2 + 41670^2 .

It is a cyclic number.

It is not a de Polignac number, because 4425744781 - 2⁹ = 4425744269 is a prime.

It is a super-2 number, since 2×4425744781² = 39174433733097475922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4425744761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76305916 + ... + 76305973.

It is an arithmetic number, because the mean of its divisors is an integer number (1144589175).

Almost surely, 2^4425744781 is an apocalyptic number.

It is an amenable number.

4425744781 is a deficient number, since it is larger than the sum of its proper divisors (152611919).

4425744781 is a wasteful number, since it uses less digits than its factorization.

4425744781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152611918.

The product of its digits is 1003520, while the sum is 46.

The square root of 4425744781 is about 66526.2713595163. The cubic root of 4425744781 is about 1641.8322745980.

The spelling of 4425744781 in words is "four billion, four hundred twenty-five million, seven hundred forty-four thousand, seven hundred eighty-one".