225355578 has 32 divisors (see below), whose sum is σ = 532863360. Its totient is φ = 62166720.

The previous prime is 225355577. The next prime is 225355579. The reversal of 225355578 is 875553522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (225355577) and next prime (225355579).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (225355577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91293 + ... + 93728.

It is an arithmetic number, because the mean of its divisors is an integer number (16651980).

Almost surely, 2^225355578 is an apocalyptic number.

225355578 is an abundant number, since it is smaller than the sum of its proper divisors (307507782).

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

225355578 is a wasteful number, since it uses less digits than its factorization.

225355578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185062.

The product of its digits is 420000, while the sum is 42.

The square root of 225355578 is about 15011.8479208924. The cubic root of 225355578 is about 608.5404305129.

The spelling of 225355578 in words is "two hundred twenty-five million, three hundred fifty-five thousand, five hundred seventy-eight".