225520365 has 32 divisors (see below), whose sum is σ = 423532800. Its totient is φ = 100306944.

The previous prime is 225520363. The next prime is 225520391. The reversal of 225520365 is 563025522.

It is not a de Polignac number, because 225520365 - 2¹ = 225520363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225520363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25140 + ... + 32909.

It is an arithmetic number, because the mean of its divisors is an integer number (13235400).

Almost surely, 2^225520365 is an apocalyptic number.

It is an amenable number.

225520365 is a deficient number, since it is larger than the sum of its proper divisors (198012435).

225520365 is a wasteful number, since it uses less digits than its factorization.

225520365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58101.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 225520365 is about 15017.3354827013. The cubic root of 225520365 is about 608.6887222632.

Adding to 225520365 its reverse (563025522), we get a palindrome (788545887).

The spelling of 225520365 in words is "two hundred twenty-five million, five hundred twenty thousand, three hundred sixty-five".