25722224 has 40 divisors (see below), whose sum is σ = 57572208. Its totient is φ = 11002880.

The previous prime is 25722223. The next prime is 25722227. The reversal of 25722224 is 42222752.

It is a junction number, because it is equal to n+sod(n) for n = 25722193 and 25722202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25722223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307 + ... + 7290.

Almost surely, 2^25722224 is an apocalyptic number.

It is an amenable number.

25722224 is an abundant number, since it is smaller than the sum of its proper divisors (31849984).

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

25722224 is a wasteful number, since it uses less digits than its factorization.

25722224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633 (or 8627 counting only the distinct ones).

The product of its digits is 4480, while the sum is 26.

The square root of 25722224 is about 5071.7081934985. The cubic root of 25722224 is about 295.1908140198.

Adding to 25722224 its reverse (42222752), we get a palindrome (67944976).

The spelling of 25722224 in words is "twenty-five million, seven hundred twenty-two thousand, two hundred twenty-four".