145504325 has 24 divisors (see below), whose sum is σ = 191505600. Its totient is φ = 109429760.

The previous prime is 145504301. The next prime is 145504327. The reversal of 145504325 is 523405541.

It is not a de Polignac number, because 145504325 - 2²² = 141310021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145504327) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 31781 + ... + 36069.

It is an arithmetic number, because the mean of its divisors is an integer number (7979400).

Almost surely, 2^145504325 is an apocalyptic number.

It is an amenable number.

145504325 is a deficient number, since it is larger than the sum of its proper divisors (46001275).

145504325 is a wasteful number, since it uses less digits than its factorization.

145504325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381 (or 4376 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 145504325 is about 12062.5173575005. The cubic root of 145504325 is about 525.9671665280.

Adding to 145504325 its reverse (523405541), we get a palindrome (668909866).

The spelling of 145504325 in words is "one hundred forty-five million, five hundred four thousand, three hundred twenty-five".