225251331 has 4 divisors (see below), whose sum is σ = 300335112. Its totient is φ = 150167552.

The previous prime is 225251297. The next prime is 225251353. The reversal of 225251331 is 133152522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225251331 - 2⁶ = 225251267 is a prime.

It is a super-2 number, since 2×225251331² = 101476324234543122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225251531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37541886 + ... + 37541891.

It is an arithmetic number, because the mean of its divisors is an integer number (75083778).

Almost surely, 2^225251331 is an apocalyptic number.

225251331 is a deficient number, since it is larger than the sum of its proper divisors (75083781).

225251331 is an equidigital number, since it uses as much as digits as its factorization.

225251331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75083780.

The product of its digits is 1800, while the sum is 24.

The square root of 225251331 is about 15008.3753617772. The cubic root of 225251331 is about 608.4465813475.

The spelling of 225251331 in words is "two hundred twenty-five million, two hundred fifty-one thousand, three hundred thirty-one".