25254321 has 4 divisors (see below), whose sum is σ = 33672432. Its totient is φ = 16836212.

The previous prime is 25254293. The next prime is 25254323. The reversal of 25254321 is 12345252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25254321 - 2⁵ = 25254289 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25254291 and 25254300.

It is not an unprimeable number, because it can be changed into a prime (25254323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4209051 + ... + 4209056.

It is an arithmetic number, because the mean of its divisors is an integer number (8418108).

Almost surely, 2^25254321 is an apocalyptic number.

It is an amenable number.

25254321 is a deficient number, since it is larger than the sum of its proper divisors (8418111).

25254321 is an equidigital number, since it uses as much as digits as its factorization.

25254321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418110.

The product of its digits is 2400, while the sum is 24.

The square root of 25254321 is about 5025.3677477375. The cubic root of 25254321 is about 293.3899493279.

Adding to 25254321 its reverse (12345252), we get a palindrome (37599573).

The spelling of 25254321 in words is "twenty-five million, two hundred fifty-four thousand, three hundred twenty-one".