225342272493 has 48 divisors (see below), whose sum is σ = 361307857456. Its totient is φ = 134436464640.

The previous prime is 225342272471. The next prime is 225342272497. The reversal of 225342272493 is 394272243522.

225342272493 is a `hidden beast` number, since 2 + 2 + 53 + 42 + 2 + 72 + 493 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 25120031049 + 200222241444 = 158493^2 + 447462^2 .

It is not a de Polignac number, because 225342272493 - 2⁹ = 225342271981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225342272497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1105173 + ... + 1293093.

Almost surely, 2^225342272493 is an apocalyptic number.

It is an amenable number.

225342272493 is a deficient number, since it is larger than the sum of its proper divisors (135965584963).

225342272493 is a wasteful number, since it uses less digits than its factorization.

225342272493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188254 (or 188251 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The spelling of 225342272493 in words is "two hundred twenty-five billion, three hundred forty-two million, two hundred seventy-two thousand, four hundred ninety-three".