145665265 has 8 divisors (see below), whose sum is σ = 185080680. Its totient is φ = 109677312.

The previous prime is 145665259. The next prime is 145665269. The reversal of 145665265 is 562566541.

It can be written as a sum of positive squares in 4 ways, for example, as 27029601 + 118635664 = 5199^2 + 10892^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 145665265 - 2³ = 145665257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145665269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856770 + ... + 856939.

It is an arithmetic number, because the mean of its divisors is an integer number (23135085).

Almost surely, 2^145665265 is an apocalyptic number.

It is an amenable number.

145665265 is a deficient number, since it is larger than the sum of its proper divisors (39415415).

145665265 is a wasteful number, since it uses less digits than its factorization.

145665265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713731.

The product of its digits is 216000, while the sum is 40.

The square root of 145665265 is about 12069.1865923102. The cubic root of 145665265 is about 526.1610163563.

The spelling of 145665265 in words is "one hundred forty-five million, six hundred sixty-five thousand, two hundred sixty-five".