225243455123 has 4 divisors (see below), whose sum is σ = 235036648848. Its totient is φ = 215450261400.

The previous prime is 225243455093. The next prime is 225243455137. The reversal of 225243455123 is 321554342522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225243455123 - 2²⁰ = 225242406547 is a prime.

It is a super-2 number, since 2×225243455123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225243451123) 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, 4896596828 + ... + 4896596873.

It is an arithmetic number, because the mean of its divisors is an integer number (58759162212).

Almost surely, 2^225243455123 is an apocalyptic number.

225243455123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

225243455123 is a deficient number, since it is larger than the sum of its proper divisors (9793193725).

225243455123 is an equidigital number, since it uses as much as digits as its factorization.

225243455123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9793193724.

The product of its digits is 288000, while the sum is 38.

Adding to 225243455123 its reverse (321554342522), we get a palindrome (546797797645).

The spelling of 225243455123 in words is "two hundred twenty-five billion, two hundred forty-three million, four hundred fifty-five thousand, one hundred twenty-three".