445606979454025 has 27 divisors (see below), whose sum is σ = 553161778232511. Its totient is φ = 356093033067840.

The previous prime is 445606979454011. The next prime is 445606979454149. The reversal of 445606979454025 is 520454979606544.

The square root of 445606979454025 is 21109405.

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 5792094182329 + 439814885271696 = 2406677^2 + 20971764^2 .

It is a de Polignac number, because none of the positive numbers 2^k-445606979454025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 130561668219 + ... + 130561671631.

Almost surely, 2^{445606979454025} is an apocalyptic number.

445606979454025 is the 21109405-th square number.

445606979454025 is the 10554703-rd centered octagonal number.

It is an amenable number.

445606979454025 is a deficient number, since it is larger than the sum of its proper divisors (107554798778486).

445606979454025 is an frugal number, since it uses more digits than its factorization.

445606979454025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9310 (or 4655 counting only the distinct ones).

The product of its (nonzero) digits is 1306368000, while the sum is 70.

The spelling of 445606979454025 in words is "four hundred forty-five trillion, six hundred six billion, nine hundred seventy-nine million, four hundred fifty-four thousand, twenty-five".