145152505 has 8 divisors (see below), whose sum is σ = 178431624. Its totient is φ = 113289600.

The previous prime is 145152499. The next prime is 145152523. The reversal of 145152505 is 505251541.

It can be written as a sum of positive squares in 4 ways, for example, as 13660416 + 131492089 = 3696^2 + 11467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145152505 - 2⁷ = 145152377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353826 + ... + 354235.

It is an arithmetic number, because the mean of its divisors is an integer number (22303953).

Almost surely, 2^145152505 is an apocalyptic number.

It is an amenable number.

145152505 is a deficient number, since it is larger than the sum of its proper divisors (33279119).

145152505 is an equidigital number, since it uses as much as digits as its factorization.

145152505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708107.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 145152505 is about 12047.9253400741. The cubic root of 145152505 is about 525.5429062593.

It can be divided in two parts, 14515 and 2505, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 145152505 in words is "one hundred forty-five million, one hundred fifty-two thousand, five hundred five".