242556225 has 24 divisors (see below), whose sum is σ = 403506912. Its totient is φ = 128563200.

The previous prime is 242556217. The next prime is 242556253. The reversal of 242556225 is 522655242.

242556225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 242556225 - 2³ = 242556217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2305 + ... + 22145.

It is an arithmetic number, because the mean of its divisors is an integer number (16812788).

Almost surely, 2^242556225 is an apocalyptic number.

242556225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

242556225 is a deficient number, since it is larger than the sum of its proper divisors (160950687).

242556225 is a wasteful number, since it uses less digits than its factorization.

242556225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20017 (or 20012 counting only the distinct ones).

The product of its digits is 48000, while the sum is 33.

The square root of 242556225 is about 15574.2166737207. The cubic root of 242556225 is about 623.6450433373.

The spelling of 242556225 in words is "two hundred forty-two million, five hundred fifty-six thousand, two hundred twenty-five".