25360643 has 16 divisors (see below), whose sum is σ = 31739136. Its totient is φ = 19686240.

The previous prime is 25360633. The next prime is 25360661. The reversal of 25360643 is 34606352.

It is not a de Polignac number, because 25360643 - 2¹⁰ = 25359619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25360603) 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 15 ways as a sum of consecutive naturals, for example, 28280 + ... + 29162.

It is an arithmetic number, because the mean of its divisors is an integer number (1983696).

Almost surely, 2^25360643 is an apocalyptic number.

25360643 is a deficient number, since it is larger than the sum of its proper divisors (6378493).

25360643 is a wasteful number, since it uses less digits than its factorization.

25360643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 25360643 is about 5035.9351663817. The cubic root of 25360643 is about 293.8011018385.

Adding to 25360643 its reverse (34606352), we get a palindrome (59966995).

The spelling of 25360643 in words is "twenty-five million, three hundred sixty thousand, six hundred forty-three".