22426251 has 16 divisors (see below), whose sum is σ = 32563200. Its totient is φ = 13674528.

The previous prime is 22426241. The next prime is 22426253. The reversal of 22426251 is 15262422.

It is a happy number.

It is not a de Polignac number, because 22426251 - 2⁷ = 22426123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22426253) 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, 5131 + ... + 8436.

It is an arithmetic number, because the mean of its divisors is an integer number (2035200).

Almost surely, 2^22426251 is an apocalyptic number.

22426251 is a deficient number, since it is larger than the sum of its proper divisors (10136949).

22426251 is a wasteful number, since it uses less digits than its factorization.

22426251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13618.

The product of its digits is 1920, while the sum is 24.

The square root of 22426251 is about 4735.6362824862. The cubic root of 22426251 is about 282.0020245315.

Adding to 22426251 its reverse (15262422), we get a palindrome (37688673).

The spelling of 22426251 in words is "twenty-two million, four hundred twenty-six thousand, two hundred fifty-one".