22249985 has 4 divisors (see below), whose sum is σ = 26699988. Its totient is φ = 17799984.

The previous prime is 22249979. The next prime is 22250017. The reversal of 22249985 is 58994222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17405584 + 4844401 = 4172^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 22249985 - 2¹² = 22245889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224994 + ... + 2225003.

It is an arithmetic number, because the mean of its divisors is an integer number (6674997).

Almost surely, 2^22249985 is an apocalyptic number.

It is an amenable number.

22249985 is a deficient number, since it is larger than the sum of its proper divisors (4450003).

22249985 is an equidigital number, since it uses as much as digits as its factorization.

22249985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450002.

The product of its digits is 103680, while the sum is 41.

The square root of 22249985 is about 4716.9889760312. The cubic root of 22249985 is about 281.2612532123.

The spelling of 22249985 in words is "twenty-two million, two hundred forty-nine thousand, nine hundred eighty-five".