445309309225 has 45 divisors (see below), whose sum is σ = 607949303815. Its totient is φ = 323567697200.

The previous prime is 445309309217. The next prime is 445309309231. The reversal of 445309309225 is 522903903544.

The square root of 445309309225 is 667315.

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

It can be written as a sum of positive squares in only one way, i.e., 160311351321 + 284997957904 = 400389^2 + 533852^2 .

It is not a de Polignac number, because 445309309225 - 2³ = 445309309217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 403725024 + ... + 403726126.

Almost surely, 2^445309309225 is an apocalyptic number.

445309309225 is the 667315-th square number.

445309309225 is the 333658-th centered octagonal number.

It is an amenable number.

445309309225 is a deficient number, since it is larger than the sum of its proper divisors (162639994590).

445309309225 is an frugal number, since it uses more digits than its factorization.

445309309225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 445309309225 in words is "four hundred forty-five billion, three hundred nine million, three hundred nine thousand, two hundred twenty-five".