225243447476 has 6 divisors (see below), whose sum is σ = 394176033090. Its totient is φ = 112621723736.

The previous prime is 225243447437. The next prime is 225243447479. The reversal of 225243447476 is 674744342522.

It can be written as a sum of positive squares in only one way, i.e., 224746157476 + 497290000 = 474074^2 + 22300^2 .

It is a super-2 number, since 2×225243447476² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225243447479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28155430931 + ... + 28155430938.

It is an arithmetic number, because the mean of its divisors is an integer number (65696005515).

Almost surely, 2^225243447476 is an apocalyptic number.

It is an amenable number.

225243447476 is a deficient number, since it is larger than the sum of its proper divisors (168932585614).

225243447476 is a wasteful number, since it uses less digits than its factorization.

225243447476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56310861873 (or 56310861871 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 50.

Adding to 225243447476 its reverse (674744342522), we get a palindrome (899987789998).

The spelling of 225243447476 in words is "two hundred twenty-five billion, two hundred forty-three million, four hundred forty-seven thousand, four hundred seventy-six".