225518658 has 32 divisors (see below), whose sum is σ = 457002432. Its totient is φ = 74184000.

The previous prime is 225518653. The next prime is 225518669. The reversal of 225518658 is 856815522.

225518658 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×225518658² = 101717330212241928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225518653) 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 15 ways as a sum of consecutive naturals, for example, 340848 + ... + 341508.

It is an arithmetic number, because the mean of its divisors is an integer number (14281326).

Almost surely, 2^225518658 is an apocalyptic number.

225518658 is an abundant number, since it is smaller than the sum of its proper divisors (231483774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225518658 is a wasteful number, since it uses less digits than its factorization.

225518658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330.

The product of its digits is 192000, while the sum is 42.

The square root of 225518658 is about 15017.2786482771. The cubic root of 225518658 is about 608.6871865050.

The spelling of 225518658 in words is "two hundred twenty-five million, five hundred eighteen thousand, six hundred fifty-eight".