22425649 has 2 divisors, whose sum is σ = 22425650. Its totient is φ = 22425648.

The previous prime is 22425619. The next prime is 22425701. The reversal of 22425649 is 94652422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21455424 + 970225 = 4632^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 22425649 - 2¹¹ = 22423601 is a prime.

It is not a weakly prime, because it can be changed into another prime (22425619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11212824 + 11212825.

It is an arithmetic number, because the mean of its divisors is an integer number (11212825).

Almost surely, 2^22425649 is an apocalyptic number.

It is an amenable number.

22425649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22425649 is an equidigital number, since it uses as much as digits as its factorization.

22425649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The square root of 22425649 is about 4735.5727214351. The cubic root of 22425649 is about 281.9995011979. Note that the first 3 decimals are identical.

The spelling of 22425649 in words is "twenty-two million, four hundred twenty-five thousand, six hundred forty-nine".