225661413 has 8 divisors (see below), whose sum is σ = 300960000. Its totient is φ = 150401888.

The previous prime is 225661351. The next prime is 225661421. The reversal of 225661413 is 314166522.

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 225661413 - 2¹⁰ = 225660389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225661433) 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, 8713 + ... + 22961.

It is an arithmetic number, because the mean of its divisors is an integer number (37620000).

Almost surely, 2^225661413 is an apocalyptic number.

It is an amenable number.

225661413 is a deficient number, since it is larger than the sum of its proper divisors (75298587).

225661413 is a wasteful number, since it uses less digits than its factorization.

225661413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19531.

The product of its digits is 8640, while the sum is 30.

The square root of 225661413 is about 15022.0309212836. The cubic root of 225661413 is about 608.8155939309.

The spelling of 225661413 in words is "two hundred twenty-five million, six hundred sixty-one thousand, four hundred thirteen".