225684451 has 8 divisors (see below), whose sum is σ = 237718800. Its totient is φ = 213665760.

The previous prime is 225684397. The next prime is 225684479. The reversal of 225684451 is 154486522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225684451 - 2¹⁵ = 225651683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225684451.

It is not an unprimeable number, because it can be changed into a prime (225684551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36441 + ... + 42181.

It is an arithmetic number, because the mean of its divisors is an integer number (29714850).

Almost surely, 2^225684451 is an apocalyptic number.

225684451 is a deficient number, since it is larger than the sum of its proper divisors (12034349).

225684451 is a wasteful number, since it uses less digits than its factorization.

225684451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7829.

The product of its digits is 76800, while the sum is 37.

The square root of 225684451 is about 15022.7977088158. The cubic root of 225684451 is about 608.8363114241.

The spelling of 225684451 in words is "two hundred twenty-five million, six hundred eighty-four thousand, four hundred fifty-one".