225104510521 has 16 divisors (see below), whose sum is σ = 247120067520. Its totient is φ = 203347998720.

The previous prime is 225104510503. The next prime is 225104510539. The reversal of 225104510521 is 125015401522.

225104510521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (225104510503) and next prime (225104510539).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225104510521 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 225104510521.

It is not an unprimeable number, because it can be changed into a prime (225104510021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16504921 + ... + 16518553.

It is an arithmetic number, because the mean of its divisors is an integer number (15445004220).

Almost surely, 2^225104510521 is an apocalyptic number.

It is an amenable number.

225104510521 is a deficient number, since it is larger than the sum of its proper divisors (22015556999).

225104510521 is a wasteful number, since it uses less digits than its factorization.

225104510521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23016.

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 225104510521 in words is "two hundred twenty-five billion, one hundred four million, five hundred ten thousand, five hundred twenty-one".