22328725 has 6 divisors (see below), whose sum is σ = 27687650. Its totient is φ = 17862960.

The previous prime is 22328707. The next prime is 22328731. The reversal of 22328725 is 52782322.

It can be written as a sum of positive squares in 3 ways, for example, as 106929 + 22221796 = 327^2 + 4714^2 .

It is not a de Polignac number, because 22328725 - 2⁷ = 22328597 is a prime.

It is a super-3 number, since 3×22328725³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 446550 + ... + 446599.

Almost surely, 2^22328725 is an apocalyptic number.

22328725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22328725 is a deficient number, since it is larger than the sum of its proper divisors (5358925).

22328725 is an equidigital number, since it uses as much as digits as its factorization.

22328725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893159 (or 893154 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 22328725 is about 4725.3280309413. The cubic root of 22328725 is about 281.5926457610.

The spelling of 22328725 in words is "twenty-two million, three hundred twenty-eight thousand, seven hundred twenty-five".