145103225 has 6 divisors (see below), whose sum is σ = 179928030. Its totient is φ = 116082560.

The previous prime is 145103221. The next prime is 145103239. The reversal of 145103225 is 522301541.

It can be written as a sum of positive squares in 3 ways, for example, as 11377129 + 133726096 = 3373^2 + 11564^2 .

It is not a de Polignac number, because 145103225 - 2² = 145103221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145103225.

It is not an unprimeable number, because it can be changed into a prime (145103221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2902040 + ... + 2902089.

It is an arithmetic number, because the mean of its divisors is an integer number (29988005).

Almost surely, 2^145103225 is an apocalyptic number.

It is an amenable number.

145103225 is a deficient number, since it is larger than the sum of its proper divisors (34824805).

145103225 is an equidigital number, since it uses as much as digits as its factorization.

145103225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804139 (or 5804134 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 145103225 is about 12045.8800010626. The cubic root of 145103225 is about 525.4834247140.

Adding to 145103225 its reverse (522301541), we get a palindrome (667404766).

The spelling of 145103225 in words is "one hundred forty-five million, one hundred three thousand, two hundred twenty-five".