305145522305 has 32 divisors (see below), whose sum is σ = 402081182496. Its totient is φ = 220922118144.

The previous prime is 305145522301. The next prime is 305145522317. The reversal of 305145522305 is 503225541503.

It can be written as a sum of positive squares in 16 ways, for example, as 37797581056 + 267347941249 = 194416^2 + 517057^2 .

It is not a de Polignac number, because 305145522305 - 2² = 305145522301 is a prime.

It is a super-2 number, since 2×305145522305² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (305145522301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4697729 + ... + 4762241.

It is an arithmetic number, because the mean of its divisors is an integer number (12565036953).

Almost surely, 2^305145522305 is an apocalyptic number.

It is an amenable number.

305145522305 is a deficient number, since it is larger than the sum of its proper divisors (96935660191).

305145522305 is a wasteful number, since it uses less digits than its factorization.

305145522305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65957.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 305145522305 in words is "three hundred five billion, one hundred forty-five million, five hundred twenty-two thousand, three hundred five".