225573842 has 16 divisors (see below), whose sum is σ = 365715672. Its totient is φ = 103731840.

The previous prime is 225573809. The next prime is 225573847. The reversal of 225573842 is 248375522.

It can be written as a sum of positive squares in 4 ways, for example, as 122124601 + 103449241 = 11051^2 + 10171^2 .

It is a junction number, because it is equal to n+sod(n) for n = 225573796 and 225573805.

It is not an unprimeable number, because it can be changed into a prime (225573847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8459 + ... + 22862.

Almost surely, 2^225573842 is an apocalyptic number.

225573842 is a deficient number, since it is larger than the sum of its proper divisors (140141830).

225573842 is a wasteful number, since it uses less digits than its factorization.

225573842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31613.

The product of its digits is 134400, while the sum is 38.

The square root of 225573842 is about 15019.1158860966. The cubic root of 225573842 is about 608.7368306669.

The spelling of 225573842 in words is "two hundred twenty-five million, five hundred seventy-three thousand, eight hundred forty-two".