30855025 has 12 divisors (see below), whose sum is σ = 38431692. Its totient is φ = 24573440.

The previous prime is 30855023. The next prime is 30855047. The reversal of 30855025 is 52055803.

It can be written as a sum of positive squares in 6 ways, for example, as 516961 + 30338064 = 719^2 + 5508^2 .

It is not a de Polignac number, because 30855025 - 2¹ = 30855023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30854984 and 30855002.

It is not an unprimeable number, because it can be changed into a prime (30855023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3177 + ... + 8473.

It is an arithmetic number, because the mean of its divisors is an integer number (3202641).

Almost surely, 2^30855025 is an apocalyptic number.

It is an amenable number.

30855025 is a deficient number, since it is larger than the sum of its proper divisors (7576667).

30855025 is a wasteful number, since it uses less digits than its factorization.

30855025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540 (or 5535 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 30855025 is about 5554.7299664340. The cubic root of 30855025 is about 313.6475991596.

The spelling of 30855025 in words is "thirty million, eight hundred fifty-five thousand, twenty-five".