25652309 has 2 divisors, whose sum is σ = 25652310. Its totient is φ = 25652308.

The previous prime is 25652293. The next prime is 25652323. The reversal of 25652309 is 90325652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24039409 + 1612900 = 4903^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 25652309 - 2⁴ = 25652293 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25652339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12826154 + 12826155.

It is an arithmetic number, because the mean of its divisors is an integer number (12826155).

Almost surely, 2^25652309 is an apocalyptic number.

It is an amenable number.

25652309 is a deficient number, since it is larger than the sum of its proper divisors (1).

25652309 is an equidigital number, since it uses as much as digits as its factorization.

25652309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 25652309 is about 5064.8108553035. The cubic root of 25652309 is about 294.9231208264.

The spelling of 25652309 in words is "twenty-five million, six hundred fifty-two thousand, three hundred nine".