25996669 has 2 divisors, whose sum is σ = 25996670. Its totient is φ = 25996668.

The previous prime is 25996657. The next prime is 25996699. The reversal of 25996669 is 96669952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25452025 + 544644 = 5045^2 + 738^2 .

It is a cyclic number.

It is not a de Polignac number, because 25996669 - 2⁵ = 25996637 is a prime.

It is a super-2 number, since 2×25996669² = 1351653598191122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25996699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12998334 + 12998335.

It is an arithmetic number, because the mean of its divisors is an integer number (12998335).

Almost surely, 2^25996669 is an apocalyptic number.

It is an amenable number.

25996669 is a deficient number, since it is larger than the sum of its proper divisors (1).

25996669 is an equidigital number, since it uses as much as digits as its factorization.

25996669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 52.

The square root of 25996669 is about 5098.6928717074. The cubic root of 25996669 is about 296.2369549230.

The spelling of 25996669 in words is "twenty-five million, nine hundred ninety-six thousand, six hundred sixty-nine".