1445503225 has 12 divisors (see below), whose sum is σ = 1819178704. Its totient is φ = 1139141520.

The previous prime is 1445503193. The next prime is 1445503229. The reversal of 1445503225 is 5223055441.

It is not a de Polignac number, because 1445503225 - 2⁵ = 1445503193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445503229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429819 + ... + 433168.

Almost surely, 2^1445503225 is an apocalyptic number.

It is an amenable number.

1445503225 is a deficient number, since it is larger than the sum of its proper divisors (373675479).

1445503225 is an equidigital number, since it uses as much as digits as its factorization.

1445503225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863064 (or 863059 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 1445503225 is about 38019.7741313649. The cubic root of 1445503225 is about 1130.6799429380.

Adding to 1445503225 its reverse (5223055441), we get a palindrome (6668558666).

The spelling of 1445503225 in words is "one billion, four hundred forty-five million, five hundred three thousand, two hundred twenty-five".