225147017051 has 4 divisors (see below), whose sum is σ = 245614927704. Its totient is φ = 204679106400.

The previous prime is 225147017033. The next prime is 225147017099. The reversal of 225147017051 is 150710741522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225147017051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225147011051) 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, 10233955310 + ... + 10233955331.

It is an arithmetic number, because the mean of its divisors is an integer number (61403731926).

Almost surely, 2^225147017051 is an apocalyptic number.

225147017051 is a deficient number, since it is larger than the sum of its proper divisors (20467910653).

225147017051 is a wasteful number, since it uses less digits than its factorization.

225147017051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20467910652.

The product of its (nonzero) digits is 19600, while the sum is 35.

Adding to 225147017051 its reverse (150710741522), we get a palindrome (375857758573).

The spelling of 225147017051 in words is "two hundred twenty-five billion, one hundred forty-seven million, seventeen thousand, fifty-one".