145513325 has 6 divisors (see below), whose sum is σ = 180436554. Its totient is φ = 116410640.

The previous prime is 145513301. The next prime is 145513331. The reversal of 145513325 is 523315541.

It can be written as a sum of positive squares in 3 ways, for example, as 30316036 + 115197289 = 5506^2 + 10733^2 .

It is not a de Polignac number, because 145513325 - 2¹² = 145509229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2910242 + ... + 2910291.

It is an arithmetic number, because the mean of its divisors is an integer number (30072759).

Almost surely, 2^145513325 is an apocalyptic number.

It is an amenable number.

145513325 is a deficient number, since it is larger than the sum of its proper divisors (34923229).

145513325 is an equidigital number, since it uses as much as digits as its factorization.

145513325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820543 (or 5820538 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 145513325 is about 12062.8904081899. The cubic root of 145513325 is about 525.9780106659.

Adding to 145513325 its reverse (523315541), we get a palindrome (668828866).

The spelling of 145513325 in words is "one hundred forty-five million, five hundred thirteen thousand, three hundred twenty-five".