25508226 has 32 divisors (see below), whose sum is σ = 54489600. Its totient is φ = 7943040.

The previous prime is 25508221. The next prime is 25508233. The reversal of 25508226 is 62280552.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25508193 and 25508202.

It is not an unprimeable number, because it can be changed into a prime (25508221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3030 + ... + 7758.

It is an arithmetic number, because the mean of its divisors is an integer number (1702800).

Almost surely, 2^25508226 is an apocalyptic number.

25508226 is an abundant number, since it is smaller than the sum of its proper divisors (28981374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25508226 is a wasteful number, since it uses less digits than its factorization.

25508226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 25508226 is about 5050.5668988738. The cubic root of 25508226 is about 294.3699124621.

Adding to 25508226 its reverse (62280552), we get a palindrome (87788778).

The spelling of 25508226 in words is "twenty-five million, five hundred eight thousand, two hundred twenty-six".