225725855 has 16 divisors (see below), whose sum is σ = 275340384. Its totient is φ = 177615360.

The previous prime is 225725807. The next prime is 225725861. The reversal of 225725855 is 558527522.

It is not a de Polignac number, because 225725855 - 2¹⁰ = 225724831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189572 + ... + 190758.

It is an arithmetic number, because the mean of its divisors is an integer number (17208774).

Almost surely, 2^225725855 is an apocalyptic number.

225725855 is a deficient number, since it is larger than the sum of its proper divisors (49614529).

225725855 is a wasteful number, since it uses less digits than its factorization.

225725855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786.

The product of its digits is 280000, while the sum is 41.

The square root of 225725855 is about 15024.1756845426. The cubic root of 225725855 is about 608.8735414550.

The spelling of 225725855 in words is "two hundred twenty-five million, seven hundred twenty-five thousand, eight hundred fifty-five".