30505325431025 has 24 divisors (see below), whose sum is σ = 38082861108600. Its totient is φ = 24238953423360.

The previous prime is 30505325430973. The next prime is 30505325431051. The reversal of 30505325431025 is 52013452350503.

It can be written as a sum of positive squares in 12 ways, for example, as 27004474875889 + 3500850555136 = 5196583^2 + 1871056^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30505325431025 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30505325431025.

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 23 ways as a sum of consecutive naturals, for example, 61128317 + ... + 61625333.

It is an arithmetic number, because the mean of its divisors is an integer number (1586785879525).

Almost surely, 2^{30505325431025} is an apocalyptic number.

It is an amenable number.

30505325431025 is a deficient number, since it is larger than the sum of its proper divisors (7577535677575).

30505325431025 is a wasteful number, since it uses less digits than its factorization.

30505325431025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513653 (or 513648 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 38.

Adding to 30505325431025 its reverse (52013452350503), we get a palindrome (82518777781528).

The spelling of 30505325431025 in words is "thirty trillion, five hundred five billion, three hundred twenty-five million, four hundred thirty-one thousand, twenty-five".