30725672563 has 4 divisors (see below), whose sum is σ = 31305402288. Its totient is φ = 30145942840.

The previous prime is 30725672519. The next prime is 30725672569. The reversal of 30725672563 is 36527652703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36527652703 = 19 ⋅1922508037.

It is a cyclic number.

It is not a de Polignac number, because 30725672563 - 2⁹ = 30725672051 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30725672569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289864783 + ... + 289864888.

It is an arithmetic number, because the mean of its divisors is an integer number (7826350572).

Almost surely, 2^30725672563 is an apocalyptic number.

30725672563 is a deficient number, since it is larger than the sum of its proper divisors (579729725).

30725672563 is an equidigital number, since it uses as much as digits as its factorization.

30725672563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579729724.

The product of its (nonzero) digits is 1587600, while the sum is 46.

The spelling of 30725672563 in words is "thirty billion, seven hundred twenty-five million, six hundred seventy-two thousand, five hundred sixty-three".