225986906 has 16 divisors (see below), whose sum is σ = 341273088. Its totient is φ = 112232400.

The previous prime is 225986897. The next prime is 225986911. The reversal of 225986906 is 609689522.

It is a happy number.

225986906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×225986906³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261431 + ... + 262293.

It is an arithmetic number, because the mean of its divisors is an integer number (21329568).

Almost surely, 2^225986906 is an apocalyptic number.

225986906 is a deficient number, since it is larger than the sum of its proper divisors (115286182).

225986906 is a wasteful number, since it uses less digits than its factorization.

225986906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 225986906 is about 15032.8608721028. The cubic root of 225986906 is about 609.1081709237.

The spelling of 225986906 in words is "two hundred twenty-five million, nine hundred eighty-six thousand, nine hundred six".