225712521175 has 12 divisors (see below), whose sum is σ = 282451268440. Its totient is φ = 178913409120.

The previous prime is 225712521131. The next prime is 225712521197. The reversal of 225712521175 is 571125217522.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-225712521175 is a prime.

It is a super-2 number, since 2×225712521175² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41412417 + ... + 41417866.

Almost surely, 2^225712521175 is an apocalyptic number.

225712521175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

225712521175 is a deficient number, since it is larger than the sum of its proper divisors (56738747265).

225712521175 is a wasteful number, since it uses less digits than its factorization.

225712521175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82830402 (or 82830397 counting only the distinct ones).

The product of its digits is 98000, while the sum is 40.

Adding to 225712521175 its reverse (571125217522), we get a palindrome (796837738697).

The spelling of 225712521175 in words is "two hundred twenty-five billion, seven hundred twelve million, five hundred twenty-one thousand, one hundred seventy-five".