225661396 has 24 divisors (see below), whose sum is σ = 405183744. Its totient is φ = 109932480.

The previous prime is 225661351. The next prime is 225661421. The reversal of 225661396 is 693166522.

It is a congruent 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, 19581 + ... + 28891.

It is an arithmetic number, because the mean of its divisors is an integer number (16882656).

Almost surely, 2^225661396 is an apocalyptic number.

It is an amenable number.

225661396 is a deficient number, since it is larger than the sum of its proper divisors (179522348).

225661396 is a wasteful number, since it uses less digits than its factorization.

225661396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9471 (or 9469 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 225661396 is about 15022.0303554480. The cubic root of 225661396 is about 608.8155786427.

The spelling of 225661396 in words is "two hundred twenty-five million, six hundred sixty-one thousand, three hundred ninety-six".