225305775 has 36 divisors (see below), whose sum is σ = 404644240. Its totient is φ = 119836800.

The previous prime is 225305771. The next prime is 225305789. The reversal of 225305775 is 577503522.

It is a happy number.

225305775 is a `hidden beast` number, since 2 + 2 + 530 + 57 + 75 = 666.

It is not a de Polignac number, because 225305775 - 2² = 225305771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225305771) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 97635 + ... + 99915.

Almost surely, 2^225305775 is an apocalyptic number.

225305775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

225305775 is a deficient number, since it is larger than the sum of its proper divisors (179338465).

225305775 is a wasteful number, since it uses less digits than its factorization.

225305775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736 (or 2728 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 36.

The square root of 225305775 is about 15010.1890394492. The cubic root of 225305775 is about 608.4955985896.

The spelling of 225305775 in words is "two hundred twenty-five million, three hundred five thousand, seven hundred seventy-five".