225133531 has 4 divisors (see below), whose sum is σ = 257295472. Its totient is φ = 192971592.

The previous prime is 225133483. The next prime is 225133537. The reversal of 225133531 is 135331522.

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 225133531 - 2¹¹ = 225131483 is a prime.

It is a super-2 number, since 2×225133531² = 101370213561055922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225133496 and 225133505.

It is not an unprimeable number, because it can be changed into a prime (225133537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16080960 + ... + 16080973.

It is an arithmetic number, because the mean of its divisors is an integer number (64323868).

Almost surely, 2^225133531 is an apocalyptic number.

225133531 is a deficient number, since it is larger than the sum of its proper divisors (32161941).

225133531 is an equidigital number, since it uses as much as digits as its factorization.

225133531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32161940.

The product of its digits is 2700, while the sum is 25.

The square root of 225133531 is about 15004.4503731393. The cubic root of 225133531 is about 608.3404961355.

The spelling of 225133531 in words is "two hundred twenty-five million, one hundred thirty-three thousand, five hundred thirty-one".