225633349871 has 4 divisors (see below), whose sum is σ = 226767186000. Its totient is φ = 224499513744.

The previous prime is 225633349853. The next prime is 225633349933. The reversal of 225633349871 is 178943336522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178943336522 = 2 ⋅89471668261.

It is a cyclic number.

It is not a de Polignac number, because 225633349871 - 2²⁶ = 225566241007 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 (225633345871) 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, 566917766 + ... + 566918163.

It is an arithmetic number, because the mean of its divisors is an integer number (56691796500).

Almost surely, 2^225633349871 is an apocalyptic number.

225633349871 is a deficient number, since it is larger than the sum of its proper divisors (1133836129).

225633349871 is a wasteful number, since it uses less digits than its factorization.

225633349871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133836128.

The product of its digits is 6531840, while the sum is 53.

The spelling of 225633349871 in words is "two hundred twenty-five billion, six hundred thirty-three million, three hundred forty-nine thousand, eight hundred seventy-one".