225719918 has 8 divisors (see below), whose sum is σ = 343633512. Its totient is φ = 111175416.

The previous prime is 225719917. The next prime is 225719927. The reversal of 225719918 is 819917522.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225719917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 842105 + ... + 842372.

It is an arithmetic number, because the mean of its divisors is an integer number (42954189).

Almost surely, 2^225719918 is an apocalyptic number.

225719918 is a deficient number, since it is larger than the sum of its proper divisors (117913594).

225719918 is a wasteful number, since it uses less digits than its factorization.

225719918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684546.

The product of its digits is 90720, while the sum is 44.

The square root of 225719918 is about 15023.9781016880. The cubic root of 225719918 is about 608.8682032481.

The spelling of 225719918 in words is "two hundred twenty-five million, seven hundred nineteen thousand, nine hundred eighteen".