145441225 has 6 divisors (see below), whose sum is σ = 180347150. Its totient is φ = 116352960.

The previous prime is 145441223. The next prime is 145441229. The reversal of 145441225 is 522144541.

It can be written as a sum of positive squares in 3 ways, for example, as 8340544 + 137100681 = 2888^2 + 11709^2 .

It is not a de Polignac number, because 145441225 - 2¹ = 145441223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145441193 and 145441202.

It is not an unprimeable number, because it can be changed into a prime (145441223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2908800 + ... + 2908849.

Almost surely, 2^145441225 is an apocalyptic number.

It is an amenable number.

145441225 is a deficient number, since it is larger than the sum of its proper divisors (34905925).

145441225 is an equidigital number, since it uses as much as digits as its factorization.

145441225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5817659 (or 5817654 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

The square root of 145441225 is about 12059.9015335947. The cubic root of 145441225 is about 525.8911245113.

Adding to 145441225 its reverse (522144541), we get a palindrome (667585766).

The spelling of 145441225 in words is "one hundred forty-five million, four hundred forty-one thousand, two hundred twenty-five".