30858025 has 27 divisors (see below), whose sum is σ = 42479269. Its totient is φ = 22220000.

The previous prime is 30858013. The next prime is 30858029. The reversal of 30858025 is 52085803.

The square root of 30858025 is 5555.

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 5697769 + 25160256 = 2387^2 + 5016^2 .

It is not a de Polignac number, because 30858025 - 2⁵ = 30857993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30858029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 305475 + ... + 305575.

Almost surely, 2^30858025 is an apocalyptic number.

30858025 is the 5555-th square number.

30858025 is the 2778-th centered octagonal number.

It is an amenable number.

30858025 is a deficient number, since it is larger than the sum of its proper divisors (11621244).

30858025 is a wasteful number, since it uses less digits than its factorization.

30858025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The cubic root of 30858025 is about 313.6577640334.

The spelling of 30858025 in words is "thirty million, eight hundred fifty-eight thousand, twenty-five".