225706686 has 32 divisors (see below), whose sum is σ = 457064448. Its totient is φ = 74299680.

The previous prime is 225706673. The next prime is 225706687. The reversal of 225706686 is 686607522.

225706686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225706687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205956 + ... + 207048.

It is an arithmetic number, because the mean of its divisors is an integer number (14283264).

Almost surely, 2^225706686 is an apocalyptic number.

225706686 is an abundant number, since it is smaller than the sum of its proper divisors (231357762).

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

225706686 is a wasteful number, since it uses less digits than its factorization.

225706686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 225706686 is about 15023.5377325050. The cubic root of 225706686 is about 608.8563054626.

The spelling of 225706686 in words is "two hundred twenty-five million, seven hundred six thousand, six hundred eighty-six".