225479042081 has 4 divisors (see below), whose sum is σ = 225591840000. Its totient is φ = 225366244164.

The previous prime is 225479042059. The next prime is 225479042093. The reversal of 225479042081 is 180240974522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225479042081 - 2⁶ = 225479042017 is a prime.

It is a super-2 number, since 2×225479042081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225479042981) 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, 56395961 + ... + 56399958.

It is an arithmetic number, because the mean of its divisors is an integer number (56397960000).

Almost surely, 2^225479042081 is an apocalyptic number.

It is an amenable number.

225479042081 is a deficient number, since it is larger than the sum of its proper divisors (112797919).

225479042081 is a wasteful number, since it uses less digits than its factorization.

225479042081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112797918.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 225479042081 in words is "two hundred twenty-five billion, four hundred seventy-nine million, forty-two thousand, eighty-one".