225606521426 has 24 divisors (see below), whose sum is σ = 400584248652. Its totient is φ = 94660077600.

The previous prime is 225606521383. The next prime is 225606521449. The reversal of 225606521426 is 624125606522.

It can be written as a sum of positive squares in 2 ways, for example, as 199048930201 + 26557591225 = 446149^2 + 162965^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35852945 + ... + 35859236.

Almost surely, 2^225606521426 is an apocalyptic number.

225606521426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

225606521426 is a deficient number, since it is larger than the sum of its proper divisors (174977727226).

225606521426 is a wasteful number, since it uses less digits than its factorization.

225606521426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71712218 (or 71712207 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 225606521426 in words is "two hundred twenty-five billion, six hundred six million, five hundred twenty-one thousand, four hundred twenty-six".