25652569 has 2 divisors, whose sum is σ = 25652570. Its totient is φ = 25652568.

The previous prime is 25652563. The next prime is 25652573. The reversal of 25652569 is 96525652.

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., 19713600 + 5938969 = 4440^2 + 2437^2 .

It is a cyclic number.

It is not a de Polignac number, because 25652569 - 2⁵ = 25652537 is a prime.

It is a super-2 number, since 2×25652569² = 1316108592599522, 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 (25652563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12826284 + 12826285.

It is an arithmetic number, because the mean of its divisors is an integer number (12826285).

Almost surely, 2^25652569 is an apocalyptic number.

It is an amenable number.

25652569 is a deficient number, since it is larger than the sum of its proper divisors (1).

25652569 is an equidigital number, since it uses as much as digits as its factorization.

25652569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 40.

The square root of 25652569 is about 5064.8365225346. The cubic root of 25652569 is about 294.9241172247.

It can be divided in two parts, 256 and 52569, that added together give a palindrome (52825).

The spelling of 25652569 in words is "twenty-five million, six hundred fifty-two thousand, five hundred sixty-nine".