242775225 has 168 divisors, whose sum is σ = 565981632. Its totient is φ = 100310400.

The previous prime is 242775209. The next prime is 242775251. The reversal of 242775225 is 522577242.

242775225 is a `hidden beast` number, since 2 + 427 + 7 + 5 + 225 = 666.

It is not a de Polignac number, because 242775225 - 2⁴ = 242775209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242775225.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 1403239 + ... + 1403411.

Almost surely, 2^242775225 is an apocalyptic number.

242775225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

242775225 is an abundant number, since it is smaller than the sum of its proper divisors (323206407).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242775225 is a wasteful number, since it uses less digits than its factorization.

242775225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 199 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 242775225 is about 15581.2459386276. The cubic root of 242775225 is about 623.8326798057.

The spelling of 242775225 in words is "two hundred forty-two million, seven hundred seventy-five thousand, two hundred twenty-five".