225769510509 has 4 divisors (see below), whose sum is σ = 301026014016. Its totient is φ = 150513007004.

The previous prime is 225769510501. The next prime is 225769510583. The reversal of 225769510509 is 905015967522.

It is a happy number.

225769510509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 225769510509 - 2³ = 225769510501 is a prime.

It is a super-2 number, since 2×225769510509² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225769510501) 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 3 ways as a sum of consecutive naturals, for example, 37628251749 + ... + 37628251754.

It is an arithmetic number, because the mean of its divisors is an integer number (75256503504).

Almost surely, 2^225769510509 is an apocalyptic number.

It is an amenable number.

225769510509 is a deficient number, since it is larger than the sum of its proper divisors (75256503507).

225769510509 is an equidigital number, since it uses as much as digits as its factorization.

225769510509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75256503506.

The product of its (nonzero) digits is 1701000, while the sum is 51.

The spelling of 225769510509 in words is "two hundred twenty-five billion, seven hundred sixty-nine million, five hundred ten thousand, five hundred nine".