225253481545 has 4 divisors (see below), whose sum is σ = 270304177860. Its totient is φ = 180202785232.

The previous prime is 225253481527. The next prime is 225253481573. The reversal of 225253481545 is 545184352522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 93871155456 + 131382326089 = 306384^2 + 362467^2 .

It is a cyclic number.

It is not a de Polignac number, because 225253481545 - 2¹¹ = 225253479497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225253481495 and 225253481504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22525348150 + ... + 22525348159.

It is an arithmetic number, because the mean of its divisors is an integer number (67576044465).

Almost surely, 2^225253481545 is an apocalyptic number.

It is an amenable number.

225253481545 is a deficient number, since it is larger than the sum of its proper divisors (45050696315).

225253481545 is an equidigital number, since it uses as much as digits as its factorization.

225253481545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45050696314.

The product of its digits is 1920000, while the sum is 46.

The spelling of 225253481545 in words is "two hundred twenty-five billion, two hundred fifty-three million, four hundred eighty-one thousand, five hundred forty-five".