225813668 has 6 divisors (see below), whose sum is σ = 395173926. Its totient is φ = 112906832.

The previous prime is 225813659. The next prime is 225813673. The reversal of 225813668 is 866318522.

225813668 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 220760164 + 5053504 = 14858^2 + 2248^2 .

It is a super-2 number, since 2×225813668² = 101983625311228448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28226705 + ... + 28226712.

It is an arithmetic number, because the mean of its divisors is an integer number (65862321).

Almost surely, 2^225813668 is an apocalyptic number.

It is an amenable number.

225813668 is a deficient number, since it is larger than the sum of its proper divisors (169360258).

225813668 is a wasteful number, since it uses less digits than its factorization.

225813668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56453421 (or 56453419 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 225813668 is about 15027.0977903253. The cubic root of 225813668 is about 608.9524868944.

The spelling of 225813668 in words is "two hundred twenty-five million, eight hundred thirteen thousand, six hundred sixty-eight".