225501505 has 8 divisors (see below), whose sum is σ = 273229632. Its totient is φ = 178649328.

The previous prime is 225501491. The next prime is 225501511. The reversal of 225501505 is 505105522.

It is a happy number.

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 225501505 - 2¹⁹ = 224977217 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 225501505.

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, 218419 + ... + 219448.

It is an arithmetic number, because the mean of its divisors is an integer number (34153704).

Almost surely, 2^225501505 is an apocalyptic number.

It is an amenable number.

225501505 is a deficient number, since it is larger than the sum of its proper divisors (47728127).

225501505 is a wasteful number, since it uses less digits than its factorization.

225501505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437975.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 225501505 is about 15016.7075286163. The cubic root of 225501505 is about 608.6717538188.

The spelling of 225501505 in words is "two hundred twenty-five million, five hundred one thousand, five hundred five".