225551505 has 24 divisors (see below), whose sum is σ = 372923136. Its totient is φ = 116406240.

The previous prime is 225551467. The next prime is 225551507. The reversal of 225551505 is 505155522.

It is not a de Polignac number, because 225551505 - 2⁷ = 225551377 is a prime.

It is a super-4 number, since 4×225551505⁴ (a number of 35 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (225551507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6592 + ... + 22238.

It is an arithmetic number, because the mean of its divisors is an integer number (15538464).

Almost surely, 2^225551505 is an apocalyptic number.

It is an amenable number.

225551505 is a deficient number, since it is larger than the sum of its proper divisors (147371631).

225551505 is a wasteful number, since it uses less digits than its factorization.

225551505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15717 (or 15686 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 225551505 is about 15018.3722486826. The cubic root of 225551505 is about 608.7167370199.

The spelling of 225551505 in words is "two hundred twenty-five million, five hundred fifty-one thousand, five hundred five".