25496321 has 4 divisors (see below), whose sum is σ = 25541700. Its totient is φ = 25450944.

The previous prime is 25496279. The next prime is 25496323. The reversal of 25496321 is 12369452.

It is a happy number.

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 10758400 + 14737921 = 3280^2 + 3839^2 .

It is a cyclic number.

It is not a de Polignac number, because 25496321 - 2⁶ = 25496257 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25496323) 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, 21836 + ... + 22973.

It is an arithmetic number, because the mean of its divisors is an integer number (6385425).

Almost surely, 2^25496321 is an apocalyptic number.

It is an amenable number.

25496321 is a deficient number, since it is larger than the sum of its proper divisors (45379).

25496321 is an equidigital number, since it uses as much as digits as its factorization.

25496321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45378.

The product of its digits is 12960, while the sum is 32.

The square root of 25496321 is about 5049.3881807601. The cubic root of 25496321 is about 294.3241099937.

The spelling of 25496321 in words is "twenty-five million, four hundred ninety-six thousand, three hundred twenty-one".