25032209 has 2 divisors, whose sum is σ = 25032210. Its totient is φ = 25032208.

The previous prime is 25032197. The next prime is 25032223. The reversal of 25032209 is 90223052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14326225 + 10705984 = 3785^2 + 3272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25032209 is a prime.

It is a super-2 number, since 2×25032209² = 1253222974839362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25034209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12516104 + 12516105.

It is an arithmetic number, because the mean of its divisors is an integer number (12516105).

Almost surely, 2^25032209 is an apocalyptic number.

It is an amenable number.

25032209 is a deficient number, since it is larger than the sum of its proper divisors (1).

25032209 is an equidigital number, since it uses as much as digits as its factorization.

25032209 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 25032209 is about 5003.2198632481. The cubic root of 25032209 is about 292.5272928486.

The spelling of 25032209 in words is "twenty-five million, thirty-two thousand, two hundred nine".