225204045409 has 4 divisors (see below), whose sum is σ = 257376051904. Its totient is φ = 193032038916.

The previous prime is 225204045397. The next prime is 225204045433. The reversal of 225204045409 is 904540402522.

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 not a de Polignac number, because 225204045409 - 2¹⁵ = 225204012641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225204048409) 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, 16086003237 + ... + 16086003250.

It is an arithmetic number, because the mean of its divisors is an integer number (64344012976).

Almost surely, 2^225204045409 is an apocalyptic number.

It is an amenable number.

225204045409 is a deficient number, since it is larger than the sum of its proper divisors (32172006495).

225204045409 is an equidigital number, since it uses as much as digits as its factorization.

225204045409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32172006494.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 225204045409 in words is "two hundred twenty-five billion, two hundred four million, forty-five thousand, four hundred nine".