225978133 has 2 divisors, whose sum is σ = 225978134. Its totient is φ = 225978132.

The previous prime is 225978131. The next prime is 225978149. The reversal of 225978133 is 331879522.

225978133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222069604 + 3908529 = 14902^2 + 1977^2 .

It is a cyclic number.

It is not a de Polignac number, because 225978133 - 2¹ = 225978131 is a prime.

It is a super-2 number, since 2×225978133² = 102132233188331378, which contains 22 as substring.

Together with 225978131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225978131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112989066 + 112989067.

It is an arithmetic number, because the mean of its divisors is an integer number (112989067).

Almost surely, 2^225978133 is an apocalyptic number.

It is an amenable number.

225978133 is a deficient number, since it is larger than the sum of its proper divisors (1).

225978133 is an equidigital number, since it uses as much as digits as its factorization.

225978133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 225978133 is about 15032.5690751781. The cubic root of 225978133 is about 609.1002887928.

The spelling of 225978133 in words is "two hundred twenty-five million, nine hundred seventy-eight thousand, one hundred thirty-three".