225641256745 has 8 divisors (see below), whose sum is σ = 270777294720. Its totient is φ = 180507814320.

The previous prime is 225641256721. The next prime is 225641256793. The reversal of 225641256745 is 547652146522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225641256745 - 2⁵ = 225641256713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452211 + ... + 809800.

It is an arithmetic number, because the mean of its divisors is an integer number (33847161840).

Almost surely, 2^225641256745 is an apocalyptic number.

It is an amenable number.

225641256745 is a deficient number, since it is larger than the sum of its proper divisors (45136037975).

225641256745 is a wasteful number, since it uses less digits than its factorization.

225641256745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297775.

The product of its digits is 4032000, while the sum is 49.

The spelling of 225641256745 in words is "two hundred twenty-five billion, six hundred forty-one million, two hundred fifty-six thousand, seven hundred forty-five".