30889820025 has 27 divisors (see below), whose sum is σ = 55331822221. Its totient is φ = 16473164640.

The previous prime is 30889819999. The next prime is 30889820077. The reversal of 30889820025 is 52002898803.

The square root of 30889820025 is 175755.

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

It can be written as a sum of positive squares in 4 ways, for example, as 17800629561 + 13089190464 = 133419^2 + 114408^2 .

It is not a de Polignac number, because 30889820025 - 2⁵ = 30889819993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2630467 + ... + 2642183.

Almost surely, 2^30889820025 is an apocalyptic number.

30889820025 is the 175755-th square number.

30889820025 is the 87878-th centered octagonal number.

It is an amenable number.

30889820025 is a deficient number, since it is larger than the sum of its proper divisors (24442002196).

30889820025 is an frugal number, since it uses more digits than its factorization.

30889820025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23450 (or 11725 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 30889820025 in words is "thirty billion, eight hundred eighty-nine million, eight hundred twenty thousand, twenty-five".