145564225 has 27 divisors (see below), whose sum is σ = 192011427. Its totient is φ = 109453680.

The previous prime is 145564193. The next prime is 145564229. The reversal of 145564225 is 522465541.

The square root of 145564225 is 12065.

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., 52403121 + 93161104 = 7239^2 + 9652^2 .

It is not a de Polignac number, because 145564225 - 2⁵ = 145564193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145564229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1146112 + ... + 1146238.

Almost surely, 2^145564225 is an apocalyptic number.

145564225 is the 12065-th square number.

145564225 is the 6033-rd centered octagonal number.

It is an amenable number.

145564225 is a deficient number, since it is larger than the sum of its proper divisors (46447202).

145564225 is an equidigital number, since it uses as much as digits as its factorization.

145564225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 151 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The cubic root of 145564225 is about 526.0393318765.

It can be divided in two parts, 14556 and 4225, that added together give a palindrome (18781).

The spelling of 145564225 in words is "one hundred forty-five million, five hundred sixty-four thousand, two hundred twenty-five".