30625229 has 2 divisors, whose sum is σ = 30625230. Its totient is φ = 30625228.

The previous prime is 30625187. The next prime is 30625249. The reversal of 30625229 is 92252603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18361225 + 12264004 = 4285^2 + 3502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30625229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30625249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15312614 + 15312615.

It is an arithmetic number, because the mean of its divisors is an integer number (15312615).

Almost surely, 2^30625229 is an apocalyptic number.

It is an amenable number.

30625229 is a deficient number, since it is larger than the sum of its proper divisors (1).

30625229 is an equidigital number, since it uses as much as digits as its factorization.

30625229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 30625229 is about 5534.0065955870. The cubic root of 30625229 is about 312.8670171063.

The spelling of 30625229 in words is "thirty million, six hundred twenty-five thousand, two hundred twenty-nine".