445205425 has 30 divisors (see below), whose sum is σ = 644112358. Its totient is φ = 305242560.

The previous prime is 445205417. The next prime is 445205447. The reversal of 445205425 is 524502544.

It can be written as a sum of positive squares in 3 ways, for example, as 74373376 + 370832049 = 8624^2 + 19257^2 .

It is not a de Polignac number, because 445205425 - 2³ = 445205417 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 56317 + ... + 63733.

Almost surely, 2^445205425 is an apocalyptic number.

It is an amenable number.

445205425 is a deficient number, since it is larger than the sum of its proper divisors (198906933).

445205425 is an frugal number, since it uses more digits than its factorization.

445205425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7455 (or 7429 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 31.

The square root of 445205425 is about 21099.8915873992. The cubic root of 445205425 is about 763.5781326599.

Adding to 445205425 its reverse (524502544), we get a palindrome (969707969).

The spelling of 445205425 in words is "four hundred forty-five million, two hundred five thousand, four hundred twenty-five".