22287025 has 6 divisors (see below), whose sum is σ = 27635942. Its totient is φ = 17829600.

The previous prime is 22286959. The next prime is 22287049. The reversal of 22287025 is 52078222.

It can be written as a sum of positive squares in 3 ways, for example, as 300304 + 21986721 = 548^2 + 4689^2 .

It is not a de Polignac number, because 22287025 - 2⁷ = 22286897 is a prime.

It is a super-2 number, since 2×22287025² = 993422966701250, 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 = 22286984 and 22287002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445716 + ... + 445765.

Almost surely, 2^22287025 is an apocalyptic number.

22287025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22287025 is a deficient number, since it is larger than the sum of its proper divisors (5348917).

22287025 is an equidigital number, since it uses as much as digits as its factorization.

22287025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891491 (or 891486 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 22287025 is about 4720.9135768408. The cubic root of 22287025 is about 281.4172404513.

The spelling of 22287025 in words is "twenty-two million, two hundred eighty-seven thousand, twenty-five".