25530226 has 16 divisors (see below), whose sum is σ = 40647096. Its totient is φ = 11984896.

The previous prime is 25530191. The next prime is 25530247. The reversal of 25530226 is 62203552.

It can be written as a sum of positive squares in 4 ways, for example, as 16524225 + 9006001 = 4065^2 + 3001^2 .

It is a super-2 number, since 2×25530226² = 1303584879222152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25530226.

It is an unprimeable number.

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, 20370 + ... + 21586.

Almost surely, 2^25530226 is an apocalyptic number.

25530226 is a deficient number, since it is larger than the sum of its proper divisors (15116870).

25530226 is a wasteful number, since it uses less digits than its factorization.

25530226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853.

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

The square root of 25530226 is about 5052.7444027974. The cubic root of 25530226 is about 294.4545162437.

Adding to 25530226 its reverse (62203552), we get a palindrome (87733778).

The spelling of 25530226 in words is "twenty-five million, five hundred thirty thousand, two hundred twenty-six".