225161294555 has 4 divisors (see below), whose sum is σ = 270193553472. Its totient is φ = 180129035640.

The previous prime is 225161294549. The next prime is 225161294573. The reversal of 225161294555 is 555492161522.

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

It is not a de Polignac number, because 225161294555 - 2⁴ = 225161294539 is a prime.

It is a Duffinian number.

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, 22516129451 + ... + 22516129460.

It is an arithmetic number, because the mean of its divisors is an integer number (67548388368).

Almost surely, 2^225161294555 is an apocalyptic number.

225161294555 is a deficient number, since it is larger than the sum of its proper divisors (45032258917).

225161294555 is an equidigital number, since it uses as much as digits as its factorization.

225161294555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45032258916.

The product of its digits is 1080000, while the sum is 47.

The spelling of 225161294555 in words is "two hundred twenty-five billion, one hundred sixty-one million, two hundred ninety-four thousand, five hundred fifty-five".