225171725603 has 4 divisors (see below), whose sum is σ = 245641882488. Its totient is φ = 204701568720.

The previous prime is 225171725599. The next prime is 225171725663. The reversal of 225171725603 is 306527171522.

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

It is not a de Polignac number, because 225171725603 - 2² = 225171725599 is a prime.

It is a super-2 number, since 2×225171725603² (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 (225171725663) 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, 10235078426 + ... + 10235078447.

It is an arithmetic number, because the mean of its divisors is an integer number (61410470622).

Almost surely, 2^225171725603 is an apocalyptic number.

225171725603 is a deficient number, since it is larger than the sum of its proper divisors (20470156885).

225171725603 is a wasteful number, since it uses less digits than its factorization.

225171725603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20470156884.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 225171725603 in words is "two hundred twenty-five billion, one hundred seventy-one million, seven hundred twenty-five thousand, six hundred three".