225550355 has 4 divisors (see below), whose sum is σ = 270660432. Its totient is φ = 180440280.

The previous prime is 225550343. The next prime is 225550399. The reversal of 225550355 is 553055522.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-225550355 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22555031 + ... + 22555040.

It is an arithmetic number, because the mean of its divisors is an integer number (67665108).

Almost surely, 2^225550355 is an apocalyptic number.

225550355 is a deficient number, since it is larger than the sum of its proper divisors (45110077).

225550355 is an equidigital number, since it uses as much as digits as its factorization.

225550355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45110076.

The product of its (nonzero) digits is 37500, while the sum is 32.

The square root of 225550355 is about 15018.3339621943. Note that the first 3 decimals coincide. The cubic root of 225550355 is about 608.7157024810.

The spelling of 225550355 in words is "two hundred twenty-five million, five hundred fifty thousand, three hundred fifty-five".