225426638 has 8 divisors (see below), whose sum is σ = 341132688. Its totient is φ = 111715744.

The previous prime is 225426629. The next prime is 225426661. The reversal of 225426638 is 836624522.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498506 + ... + 498957.

It is an arithmetic number, because the mean of its divisors is an integer number (42641586).

Almost surely, 2^225426638 is an apocalyptic number.

225426638 is a deficient number, since it is larger than the sum of its proper divisors (115706050).

225426638 is a wasteful number, since it uses less digits than its factorization.

225426638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997578.

The product of its digits is 138240, while the sum is 38.

The square root of 225426638 is about 15014.2145315697. The cubic root of 225426638 is about 608.6043862386.

The spelling of 225426638 in words is "two hundred twenty-five million, four hundred twenty-six thousand, six hundred thirty-eight".