25965269 has 6 divisors (see below), whose sum is σ = 28540470. Its totient is φ = 23604680.

The previous prime is 25965257. The next prime is 25965271. The reversal of 25965269 is 96256952.

It can be written as a sum of positive squares in only one way, i.e., 18879025 + 7086244 = 4345^2 + 2662^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25965269 is a prime.

It is a super-2 number, since 2×25965269² = 1348390388484722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25965209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107174 + ... + 107415.

It is an arithmetic number, because the mean of its divisors is an integer number (4756745).

Almost surely, 2^25965269 is an apocalyptic number.

It is an amenable number.

25965269 is a deficient number, since it is larger than the sum of its proper divisors (2575201).

25965269 is a wasteful number, since it uses less digits than its factorization.

25965269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214611 (or 214600 counting only the distinct ones).

The product of its digits is 291600, while the sum is 44.

The square root of 25965269 is about 5095.6127207628. The cubic root of 25965269 is about 296.1176372267.

Adding to 25965269 its reverse (96256952), we get a palindrome (122222221).

The spelling of 25965269 in words is "twenty-five million, nine hundred sixty-five thousand, two hundred sixty-nine".