25676569 has 2 divisors, whose sum is σ = 25676570. Its totient is φ = 25676568.

The previous prime is 25676551. The next prime is 25676593. The reversal of 25676569 is 96567652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14707225 + 10969344 = 3835^2 + 3312^2 .

It is a cyclic number.

It is not a de Polignac number, because 25676569 - 2¹¹ = 25674521 is a prime.

It is a super-2 number, since 2×25676569² = 1318572391223522, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (25676549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12838284 + 12838285.

It is an arithmetic number, because the mean of its divisors is an integer number (12838285).

Almost surely, 2^25676569 is an apocalyptic number.

It is an amenable number.

25676569 is a deficient number, since it is larger than the sum of its proper divisors (1).

25676569 is an equidigital number, since it uses as much as digits as its factorization.

25676569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 46.

The square root of 25676569 is about 5067.2052454978. The cubic root of 25676569 is about 295.0160634746.

The spelling of 25676569 in words is "twenty-five million, six hundred seventy-six thousand, five hundred sixty-nine".