22407025 has 6 divisors (see below), whose sum is σ = 27784742. Its totient is φ = 17925600.

The previous prime is 22407013. The next prime is 22407029. The reversal of 22407025 is 52070422.

It can be written as a sum of positive squares in 3 ways, for example, as 1940449 + 20466576 = 1393^2 + 4524^2 .

It is not a de Polignac number, because 22407025 - 2⁷ = 22406897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22406987 and 22407005.

It is not an unprimeable number, because it can be changed into a prime (22407029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 448116 + ... + 448165.

Almost surely, 2^22407025 is an apocalyptic number.

22407025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22407025 is a deficient number, since it is larger than the sum of its proper divisors (5377717).

22407025 is an equidigital number, since it uses as much as digits as its factorization.

22407025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896291 (or 896286 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 22407025 is about 4733.6059193811. The cubic root of 22407025 is about 281.9214148178.

Adding to 22407025 its reverse (52070422), we get a palindrome (74477447).

The spelling of 22407025 in words is "twenty-two million, four hundred seven thousand, twenty-five".