4425463661 has 4 divisors (see below), whose sum is σ = 4441212924. Its totient is φ = 4409714400.

The previous prime is 4425463657. The next prime is 4425463709. The reversal of 4425463661 is 1663645244.

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 1032401161 + 3393062500 = 32131^2 + 58250^2 .

It is a cyclic number.

It is not a de Polignac number, because 4425463661 - 2² = 4425463657 is a prime.

It is a super-2 number, since 2×4425463661² = 39169457229663045842, 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 (4425463561) 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 3 ways as a sum of consecutive naturals, for example, 7874210 + ... + 7874771.

It is an arithmetic number, because the mean of its divisors is an integer number (1110303231).

Almost surely, 2^4425463661 is an apocalyptic number.

It is an amenable number.

4425463661 is a deficient number, since it is larger than the sum of its proper divisors (15749263).

4425463661 is a wasteful number, since it uses less digits than its factorization.

4425463661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15749262.

The product of its digits is 414720, while the sum is 41.

The square root of 4425463661 is about 66524.1584764512. The cubic root of 4425463661 is about 1641.7975112090.

The spelling of 4425463661 in words is "four billion, four hundred twenty-five million, four hundred sixty-three thousand, six hundred sixty-one".