442618968425 has 54 divisors (see below), whose sum is σ = 577734768702. Its totient is φ = 336356254080.

The previous prime is 442618968413. The next prime is 442618968427. The reversal of 442618968425 is 524869816244.

It can be written as a sum of positive squares in 3 ways, for example, as 3723318361 + 438895650064 = 61019^2 + 662492^2 .

It is not a de Polignac number, because 442618968425 - 2⁶ = 442618968361 is a prime.

It is a super-2 number, since 2×442618968425² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

Its product of digits (26542080) is a multiple of the sum of its prime divisors (640).

It is not an unprimeable number, because it can be changed into a prime (442618968427) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1167859886 + ... + 1167860264.

It is an arithmetic number, because the mean of its divisors is an integer number (10698792013).

Almost surely, 2^442618968425 is an apocalyptic number.

It is an amenable number.

442618968425 is a deficient number, since it is larger than the sum of its proper divisors (135115800277).

442618968425 is an equidigital number, since it uses as much as digits as its factorization.

442618968425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 640 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 59.

The spelling of 442618968425 in words is "four hundred forty-two billion, six hundred eighteen million, nine hundred sixty-eight thousand, four hundred twenty-five".