22425431 has 16 divisors (see below), whose sum is σ = 28016640. Its totient is φ = 17504640.

The previous prime is 22425427. The next prime is 22425433. The reversal of 22425431 is 13452422.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22425431 - 2² = 22425427 is a prime.

It is a super-2 number, since 2×22425431² = 1005799911071522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22425397 and 22425406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22425433) 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, 650 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (1751040).

Almost surely, 2^22425431 is an apocalyptic number.

22425431 is a deficient number, since it is larger than the sum of its proper divisors (5591209).

22425431 is a wasteful number, since it uses less digits than its factorization.

22425431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6134.

The product of its digits is 1920, while the sum is 23.

The square root of 22425431 is about 4735.5497040998. The cubic root of 22425431 is about 281.9985874215.

Adding to 22425431 its reverse (13452422), we get a palindrome (35877853).

The spelling of 22425431 in words is "twenty-two million, four hundred twenty-five thousand, four hundred thirty-one".