225780571 has 4 divisors (see below), whose sum is σ = 225940000. Its totient is φ = 225621144.

The previous prime is 225780559. The next prime is 225780589. The reversal of 225780571 is 175087522.

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-225780571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225780571.

It is not an unprimeable number, because it can be changed into a prime (225784571) 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, 77571 + ... + 80428.

It is an arithmetic number, because the mean of its divisors is an integer number (56485000).

Almost surely, 2^225780571 is an apocalyptic number.

225780571 is a deficient number, since it is larger than the sum of its proper divisors (159429).

225780571 is a wasteful number, since it uses less digits than its factorization.

225780571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159428.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 225780571 is about 15025.9965060558. The cubic root of 225780571 is about 608.9227345099.

It can be divided in two parts, 2257 and 80571, that added together give a palindrome (82828).

The spelling of 225780571 in words is "two hundred twenty-five million, seven hundred eighty thousand, five hundred seventy-one".