30025661 has 2 divisors, whose sum is σ = 30025662. Its totient is φ = 30025660.

The previous prime is 30025657. The next prime is 30025673. The reversal of 30025661 is 16652003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16556761 + 13468900 = 4069^2 + 3670^2 .

It is a cyclic number.

It is not a de Polignac number, because 30025661 - 2² = 30025657 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30025691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15012830 + 15012831.

It is an arithmetic number, because the mean of its divisors is an integer number (15012831).

Almost surely, 2^30025661 is an apocalyptic number.

It is an amenable number.

30025661 is a deficient number, since it is larger than the sum of its proper divisors (1).

30025661 is an equidigital number, since it uses as much as digits as its factorization.

30025661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 30025661 is about 5479.5675924292. The cubic root of 30025661 is about 310.8118194509.

Adding to 30025661 its reverse (16652003), we get a palindrome (46677664).

The spelling of 30025661 in words is "thirty million, twenty-five thousand, six hundred sixty-one".