145117325 has 6 divisors (see below), whose sum is σ = 179945514. Its totient is φ = 116093840.

The previous prime is 145117309. The next prime is 145117381. The reversal of 145117325 is 523711541.

It can be written as a sum of positive squares in 3 ways, for example, as 39212644 + 105904681 = 6262^2 + 10291^2 .

It is not a de Polignac number, because 145117325 - 2⁴ = 145117309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2902322 + ... + 2902371.

It is an arithmetic number, because the mean of its divisors is an integer number (29990919).

Almost surely, 2^145117325 is an apocalyptic number.

It is an amenable number.

145117325 is a deficient number, since it is larger than the sum of its proper divisors (34828189).

145117325 is an equidigital number, since it uses as much as digits as its factorization.

145117325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804703 (or 5804698 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 145117325 is about 12046.4652491924. The cubic root of 145117325 is about 525.5004449567.

Adding to 145117325 its reverse (523711541), we get a palindrome (668828866).

The spelling of 145117325 in words is "one hundred forty-five million, one hundred seventeen thousand, three hundred twenty-five".