25256269 has 2 divisors, whose sum is σ = 25256270. Its totient is φ = 25256268.

The previous prime is 25256261. The next prime is 25256299. The reversal of 25256269 is 96265252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22915369 + 2340900 = 4787^2 + 1530^2 .

It is a cyclic number.

It is not a de Polignac number, because 25256269 - 2³ = 25256261 is a prime.

It is a super-2 number, since 2×25256269² = 1275758247600722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25256261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12628134 + 12628135.

It is an arithmetic number, because the mean of its divisors is an integer number (12628135).

Almost surely, 2^25256269 is an apocalyptic number.

It is an amenable number.

25256269 is a deficient number, since it is larger than the sum of its proper divisors (1).

25256269 is an equidigital number, since it uses as much as digits as its factorization.

25256269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 25256269 is about 5025.5615606617. The cubic root of 25256269 is about 293.3974927093.

The spelling of 25256269 in words is "twenty-five million, two hundred fifty-six thousand, two hundred sixty-nine".