225501331 has 16 divisors (see below), whose sum is σ = 254010240. Its totient is φ = 198414720.

The previous prime is 225501319. The next prime is 225501343. The reversal of 225501331 is 133105522.

It is an interprime number because it is at equal distance from previous prime (225501319) and next prime (225501343).

It is a cyclic number.

It is not a de Polignac number, because 225501331 - 2²⁵ = 191946899 is a prime.

It is a super-2 number, since 2×225501331² = 101701700565543122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225501301) 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 15 ways as a sum of consecutive naturals, for example, 51340 + ... + 55558.

It is an arithmetic number, because the mean of its divisors is an integer number (15875640).

Almost surely, 2^225501331 is an apocalyptic number.

225501331 is a deficient number, since it is larger than the sum of its proper divisors (28508909).

225501331 is a wasteful number, since it uses less digits than its factorization.

225501331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4386.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 225501331 is about 15016.7017350682. The cubic root of 225501331 is about 608.6715972657.

Adding to 225501331 its reverse (133105522), we get a palindrome (358606853).

The spelling of 225501331 in words is "two hundred twenty-five million, five hundred one thousand, three hundred thirty-one".