225213742 has 16 divisors (see below), whose sum is σ = 365131872. Its totient is φ = 103566240.

The previous prime is 225213719. The next prime is 225213761. The reversal of 225213742 is 247312522.

It is a self number, because there is not a number n which added to its sum of digits gives 225213742.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8434 + ... + 22837.

It is an arithmetic number, because the mean of its divisors is an integer number (22820742).

Almost surely, 2^225213742 is an apocalyptic number.

225213742 is a deficient number, since it is larger than the sum of its proper divisors (139918130).

225213742 is a wasteful number, since it uses less digits than its factorization.

225213742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31563.

The product of its digits is 6720, while the sum is 28.

The square root of 225213742 is about 15007.1230420757. The cubic root of 225213742 is about 608.4127344578.

The spelling of 225213742 in words is "two hundred twenty-five million, two hundred thirteen thousand, seven hundred forty-two".