444516621451225 has 12 divisors (see below), whose sum is σ = 566097924400684. Its totient is φ = 346002126966720.

The previous prime is 444516621451183. The next prime is 444516621451247. The reversal of 444516621451225 is 522154126615444.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 11298021730009 + 433218599721216 = 3361253^2 + 20813904^2 .

It is not a de Polignac number, because 444516621451225 - 2¹³ = 444516621443033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240279253914 + ... + 240279255763.

Almost surely, 2^{444516621451225} is an apocalyptic number.

It is an amenable number.

444516621451225 is a deficient number, since it is larger than the sum of its proper divisors (121581302949459).

444516621451225 is a wasteful number, since it uses less digits than its factorization.

444516621451225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480558509724 (or 480558509719 counting only the distinct ones).

The product of its digits is 9216000, while the sum is 52.

The spelling of 444516621451225 in words is "four hundred forty-four trillion, five hundred sixteen billion, six hundred twenty-one million, four hundred fifty-one thousand, two hundred twenty-five".