223645025 has 12 divisors (see below), whose sum is σ = 277623600. Its totient is φ = 178720080.

The previous prime is 223645003. The next prime is 223645027. The reversal of 223645025 is 520546322.

It is not a de Polignac number, because 223645025 - 2⁶ = 223644961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (223645027) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 21086 + ... + 29864.

It is an arithmetic number, because the mean of its divisors is an integer number (23135300).

Almost surely, 2^223645025 is an apocalyptic number.

223645025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223645025 is a deficient number, since it is larger than the sum of its proper divisors (53978575).

223645025 is a wasteful number, since it uses less digits than its factorization.

223645025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9808 (or 9803 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 223645025 is about 14954.7659627291. The cubic root of 223645025 is about 606.9968172724.

The spelling of 223645025 in words is "two hundred twenty-three million, six hundred forty-five thousand, twenty-five".