145256465 has 4 divisors (see below), whose sum is σ = 174307764. Its totient is φ = 116205168.

The previous prime is 145256437. The next prime is 145256467. The reversal of 145256465 is 564652541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95863681 + 49392784 = 9791^2 + 7028^2 .

It is a cyclic number.

It is not a de Polignac number, because 145256465 - 2⁶ = 145256401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145256467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14525642 + ... + 14525651.

It is an arithmetic number, because the mean of its divisors is an integer number (43576941).

Almost surely, 2^145256465 is an apocalyptic number.

It is an amenable number.

145256465 is a deficient number, since it is larger than the sum of its proper divisors (29051299).

145256465 is an equidigital number, since it uses as much as digits as its factorization.

145256465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29051298.

The product of its digits is 144000, while the sum is 38.

The square root of 145256465 is about 12052.2390036043. The cubic root of 145256465 is about 525.6683430707.

The spelling of 145256465 in words is "one hundred forty-five million, two hundred fifty-six thousand, four hundred sixty-five".