22788025 has 12 divisors (see below), whose sum is σ = 30431212. Its totient is φ = 16827840.

The previous prime is 22788013. The next prime is 22788037. The reversal of 22788025 is 52088722.

It is an interprime number because it is at equal distance from previous prime (22788013) and next prime (22788037).

It can be written as a sum of positive squares in 6 ways, for example, as 3286969 + 19501056 = 1813^2 + 4416^2 .

It is not a de Polignac number, because 22788025 - 2⁵ = 22787993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34734 + ... + 35383.

Almost surely, 2^22788025 is an apocalyptic number.

22788025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22788025 is a deficient number, since it is larger than the sum of its proper divisors (7643187).

22788025 is a wasteful number, since it uses less digits than its factorization.

22788025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70140 (or 70135 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 22788025 is about 4773.6804459452. The cubic root of 22788025 is about 283.5103353838.

It can be divided in two parts, 227880 and 25, that multiplied together give a triangular number (5697000 = T₃₃₇₅).

The spelling of 22788025 in words is "twenty-two million, seven hundred eighty-eight thousand, twenty-five".