30280525 has 24 divisors (see below), whose sum is σ = 41292000. Its totient is φ = 21844800.

The previous prime is 30280487. The next prime is 30280529. The reversal of 30280525 is 52508203.

It is not a de Polignac number, because 30280525 - 2¹¹ = 30278477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 30280525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40606 + ... + 41344.

It is an arithmetic number, because the mean of its divisors is an integer number (1720500).

Almost surely, 2^30280525 is an apocalyptic number.

It is an amenable number.

30280525 is a deficient number, since it is larger than the sum of its proper divisors (11011475).

30280525 is a wasteful number, since it uses less digits than its factorization.

30280525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 30280525 is about 5502.7743002962. The cubic root of 30280525 is about 311.6887545074.

Adding to 30280525 its reverse (52508203), we get a palindrome (82788728).

The spelling of 30280525 in words is "thirty million, two hundred eighty thousand, five hundred twenty-five".