22250089 has 9 divisors (see below), whose sum is σ = 22935493.
Its totient is φ = 21584992.
The previous prime is 22250087. The next prime is 22250099. The reversal of 22250089 is 98005222.
The square root of 22250089 is 4717.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 4 ways, for example, as 235225 + 22014864 = 485^2 + 4692^2
It is not a de Polignac number, because 22250089 - 21 = 22250087 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (22250087) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 249957 + ... + 250045.
Almost surely, 222250089 is an apocalyptic number.
22250089 is the 4717-th square number.
22250089 is the 2359-th centered octagonal number.
It is an amenable number.
22250089 is a deficient number, since it is larger than the sum of its proper divisors (685404).
22250089 is an frugal number, since it uses more digits than its factorization.
22250089 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 284 (or 142 counting only the distinct ones).
The product of its (nonzero) digits is 2880, while the sum is 28.
The cubic root of 22250089 is about 281.2616914317.
It can be divided in two parts, 222500 and 89, that multiplied together give a square (19802500 = 44502).
The spelling of 22250089 in words is "twenty-two million, two hundred fifty thousand, eighty-nine".