25522643 has 8 divisors (see below), whose sum is σ = 26912400. Its totient is φ = 24137568.

The previous prime is 25522631. The next prime is 25522649. The reversal of 25522643 is 34622552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25522643 - 2¹⁰ = 25521619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25522649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20153 + ... + 21381.

It is an arithmetic number, because the mean of its divisors is an integer number (3364050).

Almost surely, 2^25522643 is an apocalyptic number.

25522643 is a deficient number, since it is larger than the sum of its proper divisors (1389757).

25522643 is a wasteful number, since it uses less digits than its factorization.

25522643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341.

The product of its digits is 14400, while the sum is 29.

The square root of 25522643 is about 5051.9939627834. The cubic root of 25522643 is about 294.4253603495.

Subtracting 25522643 from its reverse (34622552), we obtain a palindrome (9099909).

The spelling of 25522643 in words is "twenty-five million, five hundred twenty-two thousand, six hundred forty-three".