225558926938 has 4 divisors (see below), whose sum is σ = 338338390410. Its totient is φ = 112779463468.

The previous prime is 225558926917. The next prime is 225558926951. The reversal of 225558926938 is 839629855522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 839629855522 = 2 ⋅419814927761.

It can be written as a sum of positive squares in only one way, i.e., 209477389969 + 16081536969 = 457687^2 + 126813^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 225558926938.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56389731733 + ... + 56389731736.

Almost surely, 2^225558926938 is an apocalyptic number.

225558926938 is a deficient number, since it is larger than the sum of its proper divisors (112779463472).

225558926938 is a wasteful number, since it uses less digits than its factorization.

225558926938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112779463471.

The product of its digits is 93312000, while the sum is 64.

The spelling of 225558926938 in words is "two hundred twenty-five billion, five hundred fifty-eight million, nine hundred twenty-six thousand, nine hundred thirty-eight".