25053643 has 4 divisors (see below), whose sum is σ = 25149168. Its totient is φ = 24958120.

The previous prime is 25053641. The next prime is 25053659. The reversal of 25053643 is 34635052.

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

It is a cyclic number.

It is not a de Polignac number, because 25053643 - 2¹ = 25053641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25053641) 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, 47368 + ... + 47893.

It is an arithmetic number, because the mean of its divisors is an integer number (6287292).

Almost surely, 2^25053643 is an apocalyptic number.

25053643 is a deficient number, since it is larger than the sum of its proper divisors (95525).

25053643 is an equidigital number, since it uses as much as digits as its factorization.

25053643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95524.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 25053643 is about 5005.3614255116. The cubic root of 25053643 is about 292.6107618606.

Adding to 25053643 its reverse (34635052), we get a palindrome (59688695).

The spelling of 25053643 in words is "twenty-five million, fifty-three thousand, six hundred forty-three".