25605223 has 8 divisors (see below), whose sum is σ = 29345792. Its totient is φ = 21885336.

The previous prime is 25605199. The next prime is 25605241. The reversal of 25605223 is 32250652.

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 25605223 - 2²¹ = 23508071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25605023) 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, 2415 + ... + 7552.

It is an arithmetic number, because the mean of its divisors is an integer number (3668224).

Almost surely, 2^25605223 is an apocalyptic number.

25605223 is a deficient number, since it is larger than the sum of its proper divisors (3740569).

25605223 is an equidigital number, since it uses as much as digits as its factorization.

25605223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10341.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 25605223 is about 5060.1603729526. The cubic root of 25605223 is about 294.7425619621.

Adding to 25605223 its reverse (32250652), we get a palindrome (57855875).

The spelling of 25605223 in words is "twenty-five million, six hundred five thousand, two hundred twenty-three".