305542025 has 6 divisors (see below), whose sum is σ = 378872142. Its totient is φ = 244433600.

The previous prime is 305542009. The next prime is 305542067. The reversal of 305542025 is 520245503.

It can be written as a sum of positive squares in 3 ways, for example, as 9048064 + 296493961 = 3008^2 + 17219^2 .

It is not a de Polignac number, because 305542025 - 2⁴ = 305542009 is a prime.

It is a super-2 number, since 2×305542025² = 186711858082201250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305541985 and 305542003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6110816 + ... + 6110865.

It is an arithmetic number, because the mean of its divisors is an integer number (63145357).

Almost surely, 2^305542025 is an apocalyptic number.

It is an amenable number.

305542025 is a deficient number, since it is larger than the sum of its proper divisors (73330117).

305542025 is a wasteful number, since it uses less digits than its factorization.

305542025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12221691 (or 12221686 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 305542025 is about 17479.7604388619. The cubic root of 305542025 is about 673.5300614316.

Adding to 305542025 its reverse (520245503), we get a palindrome (825787528).

The spelling of 305542025 in words is "three hundred five million, five hundred forty-two thousand, twenty-five".