225653997243 has 6 divisors (see below), whose sum is σ = 300873093364. Its totient is φ = 150435449644.

The previous prime is 225653997139. The next prime is 225653997281. The reversal of 225653997243 is 342799356522.

It is not a de Polignac number, because 225653997243 - 2⁸ = 225653996987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225653917243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 685648 + ... + 959906.

Almost surely, 2^225653997243 is an apocalyptic number.

225653997243 is a deficient number, since it is larger than the sum of its proper divisors (75219096121).

225653997243 is an frugal number, since it uses more digits than its factorization.

225653997243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548521 (or 274262 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 57.

The spelling of 225653997243 in words is "two hundred twenty-five billion, six hundred fifty-three million, nine hundred ninety-seven thousand, two hundred forty-three".