225806245 has 16 divisors (see below), whose sum is σ = 310808448. Its totient is φ = 154272960.

The previous prime is 225806239. The next prime is 225806303. The reversal of 225806245 is 542608522.

It is not a de Polignac number, because 225806245 - 2³ = 225806237 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 225806245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1951 + ... + 21340.

It is an arithmetic number, because the mean of its divisors is an integer number (19425528).

Almost surely, 2^225806245 is an apocalyptic number.

It is an amenable number.

225806245 is a deficient number, since it is larger than the sum of its proper divisors (85002203).

225806245 is a wasteful number, since it uses less digits than its factorization.

225806245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23580.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 225806245 is about 15026.8508011493. The cubic root of 225806245 is about 608.9458142782.

The spelling of 225806245 in words is "two hundred twenty-five million, eight hundred six thousand, two hundred forty-five".