225013561 has 8 divisors (see below), whose sum is σ = 238183200. Its totient is φ = 211976640.

The previous prime is 225013559. The next prime is 225013609. The reversal of 225013561 is 165310522.

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

It is a cyclic number.

It is not a de Polignac number, because 225013561 - 2¹ = 225013559 is a prime.

It is a super-2 number, since 2×225013561² = 101262205267801442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225013511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29680 + ... + 36481.

It is an arithmetic number, because the mean of its divisors is an integer number (29772900).

Almost surely, 2^225013561 is an apocalyptic number.

It is an amenable number.

225013561 is a deficient number, since it is larger than the sum of its proper divisors (13169639).

225013561 is a wasteful number, since it uses less digits than its factorization.

225013561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66359.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 225013561 is about 15000.4520265224. The cubic root of 225013561 is about 608.2324186809.

It can be divided in two parts, 22501 and 3561, that added together give a palindrome (26062).

The spelling of 225013561 in words is "two hundred twenty-five million, thirteen thousand, five hundred sixty-one".