25298369 has 4 divisors (see below), whose sum is σ = 25644996. Its totient is φ = 24951744.

The previous prime is 25298341. The next prime is 25298381. The reversal of 25298369 is 96389252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15904144 + 9394225 = 3988^2 + 3065^2 .

It is a cyclic number.

It is not a de Polignac number, because 25298369 - 2⁸ = 25298113 is a prime.

It is a super-2 number, since 2×25298369² = 1280014948120322, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25298069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173204 + ... + 173349.

It is an arithmetic number, because the mean of its divisors is an integer number (6411249).

Almost surely, 2^25298369 is an apocalyptic number.

It is an amenable number.

25298369 is a deficient number, since it is larger than the sum of its proper divisors (346627).

25298369 is an equidigital number, since it uses as much as digits as its factorization.

25298369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346626.

The product of its digits is 233280, while the sum is 44.

The square root of 25298369 is about 5029.7484032504. The cubic root of 25298369 is about 293.5604248977.

The spelling of 25298369 in words is "twenty-five million, two hundred ninety-eight thousand, three hundred sixty-nine".