30825449 has 2 divisors, whose sum is σ = 30825450. Its totient is φ = 30825448.

The previous prime is 30825413. The next prime is 30825469. The reversal of 30825449 is 94452803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27825625 + 2999824 = 5275^2 + 1732^2 .

It is an emirp because it is prime and its reverse (94452803) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30825449 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30825409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15412724 + 15412725.

It is an arithmetic number, because the mean of its divisors is an integer number (15412725).

Almost surely, 2^30825449 is an apocalyptic number.

It is an amenable number.

30825449 is a deficient number, since it is larger than the sum of its proper divisors (1).

30825449 is an equidigital number, since it uses as much as digits as its factorization.

30825449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 30825449 is about 5552.0670925341. The cubic root of 30825449 is about 313.5473517721.

The spelling of 30825449 in words is "thirty million, eight hundred twenty-five thousand, four hundred forty-nine".