225481646 has 16 divisors (see below), whose sum is σ = 366282000. Its totient is φ = 103484928.

The previous prime is 225481643. The next prime is 225481667. The reversal of 225481646 is 646184522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225481643) 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, 19571 + ... + 28878.

It is an arithmetic number, because the mean of its divisors is an integer number (22892625).

Almost surely, 2^225481646 is an apocalyptic number.

225481646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

225481646 is a deficient number, since it is larger than the sum of its proper divisors (140800354).

225481646 is a wasteful number, since it uses less digits than its factorization.

225481646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48643.

The product of its digits is 92160, while the sum is 38.

The square root of 225481646 is about 15016.0462838924. The cubic root of 225481646 is about 608.6538855460.

The spelling of 225481646 in words is "two hundred twenty-five million, four hundred eighty-one thousand, six hundred forty-six".