25563222 has 32 divisors (see below), whose sum is σ = 57045600. Its totient is φ = 8485344.

The previous prime is 25563217. The next prime is 25563233. The reversal of 25563222 is 22236552.

25563222 is a `hidden beast` number, since 2 + 5 + 5 + 632 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14104 + ... + 15812.

It is an arithmetic number, because the mean of its divisors is an integer number (1782675).

Almost surely, 2^25563222 is an apocalyptic number.

25563222 is an abundant number, since it is smaller than the sum of its proper divisors (31482378).

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

25563222 is a wasteful number, since it uses less digits than its factorization.

25563222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997 (or 1991 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 25563222 is about 5056.0085047397. The cubic root of 25563222 is about 294.5813154679.

Adding to 25563222 its reverse (22236552), we get a palindrome (47799774).

It can be divided in two parts, 2556 and 3222, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 25563222 in words is "twenty-five million, five hundred sixty-three thousand, two hundred twenty-two".