25699469 has 2 divisors, whose sum is σ = 25699470. Its totient is φ = 25699468.

The previous prime is 25699439. The next prime is 25699489. The reversal of 25699469 is 96499652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25623844 + 75625 = 5062^2 + 275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25699469 is a prime.

It is a super-2 number, since 2×25699469² = 1320925413763922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25699439) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12849734 + 12849735.

It is an arithmetic number, because the mean of its divisors is an integer number (12849735).

Almost surely, 2^25699469 is an apocalyptic number.

It is an amenable number.

25699469 is a deficient number, since it is larger than the sum of its proper divisors (1).

25699469 is an equidigital number, since it uses as much as digits as its factorization.

25699469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 50.

The square root of 25699469 is about 5069.4643701283. The cubic root of 25699469 is about 295.1037421206.

The spelling of 25699469 in words is "twenty-five million, six hundred ninety-nine thousand, four hundred sixty-nine".