305252505 has 24 divisors (see below), whose sum is σ = 546174720. Its totient is φ = 157548960.

The previous prime is 305252491. The next prime is 305252513. The reversal of 305252505 is 505252503.

It is not a de Polignac number, because 305252505 - 2¹⁵ = 305219737 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108015 + ... + 110804.

It is an arithmetic number, because the mean of its divisors is an integer number (22757280).

Almost surely, 2^305252505 is an apocalyptic number.

It is an amenable number.

305252505 is a deficient number, since it is larger than the sum of its proper divisors (240922215).

305252505 is a wasteful number, since it uses less digits than its factorization.

305252505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218861 (or 218858 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 305252505 is about 17471.4768980759. The cubic root of 305252505 is about 673.3172570474.

The spelling of 305252505 in words is "three hundred five million, two hundred fifty-two thousand, five hundred five".