305530425 has 36 divisors (see below), whose sum is σ = 557585964. Its totient is φ = 159868800.

The previous prime is 305530403. The next prime is 305530427. The reversal of 305530425 is 524035503.

It can be written as a sum of positive squares in 6 ways, for example, as 12299049 + 293231376 = 3507^2 + 17124^2 .

It is not a de Polignac number, because 305530425 - 2²² = 301336121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305530427) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 886 + ... + 24735.

It is an arithmetic number, because the mean of its divisors is an integer number (15488499).

Almost surely, 2^305530425 is an apocalyptic number.

It is an amenable number.

305530425 is a deficient number, since it is larger than the sum of its proper divisors (252055539).

305530425 is a wasteful number, since it uses less digits than its factorization.

305530425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25690 (or 25682 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 305530425 is about 17479.4286233847. The cubic root of 305530425 is about 673.5215377295.

Adding to 305530425 its reverse (524035503), we get a palindrome (829565928).

The spelling of 305530425 in words is "three hundred five million, five hundred thirty thousand, four hundred twenty-five".