441405221655625 has 20 divisors (see below), whose sum is σ = 551650030823716. Its totient is φ = 353079320832000.

The previous prime is 441405221655583. The next prime is 441405221655647. The reversal of 441405221655625 is 526556122504144.

It can be written as a sum of positive squares in 10 ways, for example, as 349541201232441 + 91864020423184 = 18696021^2 + 9584572^2 .

It is not a de Polignac number, because 441405221655625 - 2²⁵ = 441405188101193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39931932 + ... + 49773181.

Almost surely, 2^{441405221655625} is an apocalyptic number.

It is an amenable number.

441405221655625 is a deficient number, since it is larger than the sum of its proper divisors (110244809168091).

441405221655625 is an frugal number, since it uses more digits than its factorization.

441405221655625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89713006 (or 89712991 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 52.

The spelling of 441405221655625 in words is "four hundred forty-one trillion, four hundred five billion, two hundred twenty-one million, six hundred fifty-five thousand, six hundred twenty-five".