225557047 has 4 divisors (see below), whose sum is σ = 226907856. Its totient is φ = 224206240.

The previous prime is 225557027. The next prime is 225557063. The reversal of 225557047 is 740755522.

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

It is a cyclic number.

It is not a de Polignac number, because 225557047 - 2¹⁵ = 225524279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225556997 and 225557015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225557027) 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 3 ways as a sum of consecutive naturals, for example, 675154 + ... + 675487.

It is an arithmetic number, because the mean of its divisors is an integer number (56726964).

Almost surely, 2^225557047 is an apocalyptic number.

225557047 is a deficient number, since it is larger than the sum of its proper divisors (1350809).

225557047 is a wasteful number, since it uses less digits than its factorization.

225557047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350808.

The product of its (nonzero) digits is 98000, while the sum is 37.

The square root of 225557047 is about 15018.5567548949. The cubic root of 225557047 is about 608.7217225487.

The spelling of 225557047 in words is "two hundred twenty-five million, five hundred fifty-seven thousand, forty-seven".