225613501 has 4 divisors (see below), whose sum is σ = 226264032. Its totient is φ = 224962972.

The previous prime is 225613471. The next prime is 225613513. The reversal of 225613501 is 105316522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225613501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225610501) 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 3 ways as a sum of consecutive naturals, for example, 324745 + ... + 325438.

It is an arithmetic number, because the mean of its divisors is an integer number (56566008).

Almost surely, 2^225613501 is an apocalyptic number.

It is an amenable number.

225613501 is a deficient number, since it is larger than the sum of its proper divisors (650531).

225613501 is an equidigital number, since it uses as much as digits as its factorization.

225613501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650530.

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

The square root of 225613501 is about 15020.4361121773. The cubic root of 225613501 is about 608.7725033599.

It can be divided in two parts, 22561 and 3501, that added together give a palindrome (26062).

The spelling of 225613501 in words is "two hundred twenty-five million, six hundred thirteen thousand, five hundred one".