225906005 has 8 divisors (see below), whose sum is σ = 291940152. Its totient is φ = 166822848.

The previous prime is 225905983. The next prime is 225906011. The reversal of 225906005 is 500609522.

It can be written as a sum of positive squares in 4 ways, for example, as 485809 + 225420196 = 697^2 + 15014^2 .

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 225906005 - 2¹⁸ = 225643861 is a prime.

It is a Duffinian number.

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, 1737674 + ... + 1737803.

It is an arithmetic number, because the mean of its divisors is an integer number (36492519).

Almost surely, 2^225906005 is an apocalyptic number.

It is an amenable number.

225906005 is a deficient number, since it is larger than the sum of its proper divisors (66034147).

225906005 is a wasteful number, since it uses less digits than its factorization.

225906005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475495.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 225906005 is about 15030.1698260532. The cubic root of 225906005 is about 609.0354774177.

The spelling of 225906005 in words is "two hundred twenty-five million, nine hundred six thousand, five".