25869269 has 2 divisors, whose sum is σ = 25869270. Its totient is φ = 25869268.

The previous prime is 25869167. The next prime is 25869281. The reversal of 25869269 is 96296852.

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., 21298225 + 4571044 = 4615^2 + 2138^2 .

It is a cyclic number.

It is not a de Polignac number, because 25869269 - 2¹² = 25865173 is a prime.

It is a super-2 number, since 2×25869269² = 1338438157188722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25869289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12934634 + 12934635.

It is an arithmetic number, because the mean of its divisors is an integer number (12934635).

Almost surely, 2^25869269 is an apocalyptic number.

It is an amenable number.

25869269 is a deficient number, since it is larger than the sum of its proper divisors (1).

25869269 is an equidigital number, since it uses as much as digits as its factorization.

25869269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 25869269 is about 5086.1841295808. The cubic root of 25869269 is about 295.7522465768.

The spelling of 25869269 in words is "twenty-five million, eight hundred sixty-nine thousand, two hundred sixty-nine".