25304243 has 4 divisors (see below), whose sum is σ = 25431600. Its totient is φ = 25176888.

The previous prime is 25304233. The next prime is 25304249. The reversal of 25304243 is 34240352.

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 25304243 - 2⁶ = 25304179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25304249) 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, 63380 + ... + 63777.

It is an arithmetic number, because the mean of its divisors is an integer number (6357900).

Almost surely, 2^25304243 is an apocalyptic number.

25304243 is a deficient number, since it is larger than the sum of its proper divisors (127357).

25304243 is a wasteful number, since it uses less digits than its factorization.

25304243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127356.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 25304243 is about 5030.3322951869. The cubic root of 25304243 is about 293.5831436283.

Adding to 25304243 its reverse (34240352), we get a palindrome (59544595).

The spelling of 25304243 in words is "twenty-five million, three hundred four thousand, two hundred forty-three".