25604069 has 2 divisors, whose sum is σ = 25604070. Its totient is φ = 25604068.

The previous prime is 25604063. The next prime is 25604101. The reversal of 25604069 is 96040652.

It is an a-pointer prime, because the next prime (25604101) can be obtained adding 25604069 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22137025 + 3467044 = 4705^2 + 1862^2 .

It is a cyclic number.

It is not a de Polignac number, because 25604069 - 2⁸ = 25603813 is a prime.

It is a super-2 number, since 2×25604069² = 1311136698713522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25604063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12802034 + 12802035.

It is an arithmetic number, because the mean of its divisors is an integer number (12802035).

Almost surely, 2^25604069 is an apocalyptic number.

It is an amenable number.

25604069 is a deficient number, since it is larger than the sum of its proper divisors (1).

25604069 is an equidigital number, since it uses as much as digits as its factorization.

25604069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 25604069 is about 5060.0463436613. The cubic root of 25604069 is about 294.7381339850.

The spelling of 25604069 in words is "twenty-five million, six hundred four thousand, sixty-nine".