25553423 has 16 divisors (see below), whose sum is σ = 30912000. Its totient is φ = 20634912.

The previous prime is 25553417. The next prime is 25553447. The reversal of 25553423 is 32435552.

It is not a de Polignac number, because 25553423 - 2¹⁰ = 25552399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25553123) 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 15 ways as a sum of consecutive naturals, for example, 30038 + ... + 30876.

It is an arithmetic number, because the mean of its divisors is an integer number (1932000).

Almost surely, 2^25553423 is an apocalyptic number.

25553423 is a deficient number, since it is larger than the sum of its proper divisors (5358577).

25553423 is a wasteful number, since it uses less digits than its factorization.

25553423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094.

The product of its digits is 18000, while the sum is 29.

The square root of 25553423 is about 5055.0393668101. The cubic root of 25553423 is about 294.5436706146.

Adding to 25553423 its reverse (32435552), we get a palindrome (57988975).

The spelling of 25553423 in words is "twenty-five million, five hundred fifty-three thousand, four hundred twenty-three".