4425581 has 4 divisors (see below), whose sum is σ = 4533564. Its totient is φ = 4317600.

The previous prime is 4425571. The next prime is 4425587. The reversal of 4425581 is 1855244.

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 1755625 + 2669956 = 1325^2 + 1634^2 .

It is a cyclic number.

It is not a de Polignac number, because 4425581 - 2²² = 231277 is a prime.

It is a super-2 number, since 2×4425581² = 39171534375122, 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 (4425587) 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, 53930 + ... + 54011.

It is an arithmetic number, because the mean of its divisors is an integer number (1133391).

Almost surely, 2^4425581 is an apocalyptic number.

4425581 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4425581 is a deficient number, since it is larger than the sum of its proper divisors (107983).

4425581 is a wasteful number, since it uses less digits than its factorization.

4425581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107982.

The product of its digits is 6400, while the sum is 29.

The square root of 4425581 is about 2103.7064909345. The cubic root of 4425581 is about 164.1812021566.

The spelling of 4425581 in words is "four million, four hundred twenty-five thousand, five hundred eighty-one".