225656162533 has 4 divisors (see below), whose sum is σ = 229355443948. Its totient is φ = 221956881120.

The previous prime is 225656162513. The next prime is 225656162549. The reversal of 225656162533 is 335261656522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57870075844 + 167786086689 = 240562^2 + 409617^2 .

It is a cyclic number.

It is not a de Polignac number, because 225656162533 - 2⁹ = 225656162021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225656162513) 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, 1849640616 + ... + 1849640737.

It is an arithmetic number, because the mean of its divisors is an integer number (57338860987).

Almost surely, 2^225656162533 is an apocalyptic number.

It is an amenable number.

225656162533 is a deficient number, since it is larger than the sum of its proper divisors (3699281415).

225656162533 is an equidigital number, since it uses as much as digits as its factorization.

225656162533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699281414.

The product of its digits is 1944000, while the sum is 46.

The spelling of 225656162533 in words is "two hundred twenty-five billion, six hundred fifty-six million, one hundred sixty-two thousand, five hundred thirty-three".