225291812 has 24 divisors (see below), whose sum is σ = 402339000. Its totient is φ = 110361600.

The previous prime is 225291811. The next prime is 225291839. The reversal of 225291812 is 218192522.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24049216 + 201242596 = 4904^2 + 14186^2 .

It is not an unprimeable number, because it can be changed into a prime (225291811) 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, 36314 + ... + 42062.

It is an arithmetic number, because the mean of its divisors is an integer number (16764125).

Almost surely, 2^225291812 is an apocalyptic number.

It is an amenable number.

225291812 is a deficient number, since it is larger than the sum of its proper divisors (177047188).

225291812 is a wasteful number, since it uses less digits than its factorization.

225291812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951 (or 5949 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 225291812 is about 15009.7239148493. The cubic root of 225291812 is about 608.4830281180.

The spelling of 225291812 in words is "two hundred twenty-five million, two hundred ninety-one thousand, eight hundred twelve".