1446643645225 has 27 divisors (see below), whose sum is σ = 1802176425679. Its totient is φ = 1151960206400.

The previous prime is 1446643645177. The next prime is 1446643645277. The reversal of 1446643645225 is 5225463466441.

The square root of 1446643645225 is 1202765.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 477056820249 + 969586824976 = 690693^2 + 984676^2 .

It is not a de Polignac number, because 1446643645225 - 2²¹ = 1446641548073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1762050315 + ... + 1762051135.

Almost surely, 2^{1446643645225} is an apocalyptic number.

1446643645225 is the 1202765-th square number.

1446643645225 is the 601383-rd centered octagonal number.

It is an amenable number.

1446643645225 is a deficient number, since it is larger than the sum of its proper divisors (355532780454).

1446643645225 is an frugal number, since it uses more digits than its factorization.

1446643645225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238 (or 1119 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 52.

The spelling of 1446643645225 in words is "one trillion, four hundred forty-six billion, six hundred forty-three million, six hundred forty-five thousand, two hundred twenty-five".