25780226 has 16 divisors (see below), whose sum is σ = 41700960. Its totient is φ = 11913120.

The previous prime is 25780201. The next prime is 25780229. The reversal of 25780226 is 62208752.

It is a super-2 number, since 2×25780226² = 1329240105222152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25780192 and 25780201.

It is not an unprimeable number, because it can be changed into a prime (25780229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6716 + ... + 9831.

It is an arithmetic number, because the mean of its divisors is an integer number (2606310).

Almost surely, 2^25780226 is an apocalyptic number.

25780226 is a deficient number, since it is larger than the sum of its proper divisors (15920734).

25780226 is a wasteful number, since it uses less digits than its factorization.

25780226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16609.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 25780226 is about 5077.4231653468. The cubic root of 25780226 is about 295.4125263708.

Adding to 25780226 its reverse (62208752), we get a palindrome (87988978).

The spelling of 25780226 in words is "twenty-five million, seven hundred eighty thousand, two hundred twenty-six".