23280225 has 72 divisors (see below), whose sum is σ = 44327520. Its totient is φ = 10713600.

The previous prime is 23280221. The next prime is 23280227. The reversal of 23280225 is 52208232.

It is not a de Polignac number, because 23280225 - 2² = 23280221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23280195 and 23280204.

It is not an unprimeable number, because it can be changed into a prime (23280221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 750960 + ... + 750990.

It is an arithmetic number, because the mean of its divisors is an integer number (615660).

Almost surely, 2^23280225 is an apocalyptic number.

23280225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23280225 is a deficient number, since it is larger than the sum of its proper divisors (21047295).

23280225 is a wasteful number, since it uses less digits than its factorization.

23280225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 23280225 is about 4824.9585490447. The cubic root of 23280225 is about 285.5369992422.

Adding to 23280225 its reverse (52208232), we get a palindrome (75488457).

The spelling of 23280225 in words is "twenty-three million, two hundred eighty thousand, two hundred twenty-five".