30225649 has 2 divisors, whose sum is σ = 30225650. Its totient is φ = 30225648.

The previous prime is 30225631. The next prime is 30225661. The reversal of 30225649 is 94652203.

30225649 is nontrivially palindromic in base 8.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18447025 + 11778624 = 4295^2 + 3432^2 .

It is an emirp because it is prime and its reverse (94652203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30225649 - 2⁵ = 30225617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30225649.

It is not a weakly prime, because it can be changed into another prime (30225149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15112824 + 15112825.

It is an arithmetic number, because the mean of its divisors is an integer number (15112825).

Almost surely, 2^30225649 is an apocalyptic number.

It is an amenable number.

30225649 is a deficient number, since it is larger than the sum of its proper divisors (1).

30225649 is an equidigital number, since it uses as much as digits as its factorization.

30225649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 30225649 is about 5497.7858270398. The cubic root of 30225649 is about 311.5003542633.

The spelling of 30225649 in words is "thirty million, two hundred twenty-five thousand, six hundred forty-nine".