30865219225 has 27 divisors (see below), whose sum is σ = 39274952791. Its totient is φ = 24061817600.

The previous prime is 30865219211. The next prime is 30865219247. The reversal of 30865219225 is 52291256803.

The square root of 30865219225 is 175685.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 21291770889 + 9573448336 = 145917^2 + 97844^2 .

It is not a de Polignac number, because 30865219225 - 2⁷ = 30865219097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 36014997 + ... + 36015853.

Almost surely, 2^30865219225 is an apocalyptic number.

30865219225 is the 175685-th square number.

30865219225 is the 87843-rd centered octagonal number.

It is an amenable number.

30865219225 is a deficient number, since it is larger than the sum of its proper divisors (8409733566).

30865219225 is an frugal number, since it uses more digits than its factorization.

30865219225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 30865219225 in words is "thirty billion, eight hundred sixty-five million, two hundred nineteen thousand, two hundred twenty-five".