25583669 has 2 divisors, whose sum is σ = 25583670. Its totient is φ = 25583668.

The previous prime is 25583647. The next prime is 25583689. The reversal of 25583669 is 96638552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22676644 + 2907025 = 4762^2 + 1705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25583669 is a prime.

It is a super-2 number, since 2×25583669² = 1309048239003122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25583609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12791834 + 12791835.

It is an arithmetic number, because the mean of its divisors is an integer number (12791835).

Almost surely, 2^25583669 is an apocalyptic number.

It is an amenable number.

25583669 is a deficient number, since it is larger than the sum of its proper divisors (1).

25583669 is an equidigital number, since it uses as much as digits as its factorization.

25583669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 44.

The square root of 25583669 is about 5058.0301501672. The cubic root of 25583669 is about 294.6598358117.

Adding to 25583669 its reverse (96638552), we get a palindrome (122222221).

The spelling of 25583669 in words is "twenty-five million, five hundred eighty-three thousand, six hundred sixty-nine".