445220425 has 24 divisors (see below), whose sum is σ = 607211136. Its totient is φ = 321771840.

The previous prime is 445220393. The next prime is 445220437. The reversal of 445220425 is 524022544.

It is not a de Polignac number, because 445220425 - 2⁵ = 445220393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445220393 and 445220402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 702 + ... + 29848.

It is an arithmetic number, because the mean of its divisors is an integer number (25300464).

Almost surely, 2^445220425 is an apocalyptic number.

It is an amenable number.

445220425 is a deficient number, since it is larger than the sum of its proper divisors (161990711).

445220425 is a wasteful number, since it uses less digits than its factorization.

445220425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29217 (or 29212 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 445220425 is about 21100.2470364686. The cubic root of 445220425 is about 763.5867081344.

Adding to 445220425 its reverse (524022544), we get a palindrome (969242969).

The spelling of 445220425 in words is "four hundred forty-five million, two hundred twenty thousand, four hundred twenty-five".