4425425661 has 8 divisors (see below), whose sum is σ = 5908686784. Its totient is φ = 2946224160.

The previous prime is 4425425647. The next prime is 4425425681. The reversal of 4425425661 is 1665245244.

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

It is not a de Polignac number, because 4425425661 - 2⁵ = 4425425629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4425425611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012360 + ... + 1016721.

It is an arithmetic number, because the mean of its divisors is an integer number (738585848).

Almost surely, 2^4425425661 is an apocalyptic number.

It is an amenable number.

4425425661 is a deficient number, since it is larger than the sum of its proper divisors (1483261123).

4425425661 is a wasteful number, since it uses less digits than its factorization.

4425425661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029811.

The product of its digits is 230400, while the sum is 39.

The square root of 4425425661 is about 66523.8728653105. The cubic root of 4425425661 is about 1641.7928120039.

The spelling of 4425425661 in words is "four billion, four hundred twenty-five million, four hundred twenty-five thousand, six hundred sixty-one".