225631646 has 4 divisors (see below), whose sum is σ = 338447472. Its totient is φ = 112815822.

The previous prime is 225631597. The next prime is 225631673. The reversal of 225631646 is 646136522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56407910 + ... + 56407913.

It is an arithmetic number, because the mean of its divisors is an integer number (84611868).

Almost surely, 2^225631646 is an apocalyptic number.

225631646 is a deficient number, since it is larger than the sum of its proper divisors (112815826).

225631646 is a wasteful number, since it uses less digits than its factorization.

225631646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112815825.

The product of its digits is 51840, while the sum is 35.

The square root of 225631646 is about 15021.0401104584. The cubic root of 225631646 is about 608.7888231294.

The spelling of 225631646 in words is "two hundred twenty-five million, six hundred thirty-one thousand, six hundred forty-six".