225871405493 has 4 divisors (see below), whose sum is σ = 235691901408. Its totient is φ = 216050909580.

The previous prime is 225871405483. The next prime is 225871405499. The reversal of 225871405493 is 394504178522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225871405493 - 2¹⁰ = 225871404469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225871405499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4910247923 + ... + 4910247968.

It is an arithmetic number, because the mean of its divisors is an integer number (58922975352).

Almost surely, 2^225871405493 is an apocalyptic number.

225871405493 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

225871405493 is a deficient number, since it is larger than the sum of its proper divisors (9820495915).

225871405493 is an equidigital number, since it uses as much as digits as its factorization.

225871405493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9820495914.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 225871405493 in words is "two hundred twenty-five billion, eight hundred seventy-one million, four hundred five thousand, four hundred ninety-three".