225992738 has 8 divisors (see below), whose sum is σ = 347257260. Its totient is φ = 110240320.

The previous prime is 225992731. The next prime is 225992749. The reversal of 225992738 is 837299522.

It can be written as a sum of positive squares in 2 ways, for example, as 224310529 + 1682209 = 14977^2 + 1297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 225992692 and 225992701.

It is not an unprimeable number, because it can be changed into a prime (225992731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377923 + ... + 1378086.

Almost surely, 2^225992738 is an apocalyptic number.

225992738 is a deficient number, since it is larger than the sum of its proper divisors (121264522).

225992738 is a wasteful number, since it uses less digits than its factorization.

225992738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756052.

The product of its digits is 544320, while the sum is 47.

The square root of 225992738 is about 15033.0548459054. The cubic root of 225992738 is about 609.1134105906.

The spelling of 225992738 in words is "two hundred twenty-five million, nine hundred ninety-two thousand, seven hundred thirty-eight".