225541131 has 4 divisors (see below), whose sum is σ = 300721512. Its totient is φ = 150360752.

The previous prime is 225541111. The next prime is 225541133. The reversal of 225541131 is 131145522.

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 225541131 - 2¹⁸ = 225278987 is a prime.

It is a super-2 number, since 2×225541131² = 101737603545518322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225541133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37590186 + ... + 37590191.

It is an arithmetic number, because the mean of its divisors is an integer number (75180378).

Almost surely, 2^225541131 is an apocalyptic number.

225541131 is a deficient number, since it is larger than the sum of its proper divisors (75180381).

225541131 is an equidigital number, since it uses as much as digits as its factorization.

225541131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75180380.

The product of its digits is 1200, while the sum is 24.

The square root of 225541131 is about 15018.0268677347. The cubic root of 225541131 is about 608.7074044520.

Adding to 225541131 its reverse (131145522), we get a palindrome (356686653).

The spelling of 225541131 in words is "two hundred twenty-five million, five hundred forty-one thousand, one hundred thirty-one".