102225009 has 4 divisors (see below), whose sum is σ = 136300016. Its totient is φ = 68150004.

The previous prime is 102225007. The next prime is 102225031. The reversal of 102225009 is 900522201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 900522201 = 3 ⋅300174067.

It is not a de Polignac number, because 102225009 - 2¹ = 102225007 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102225007) 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, 17037499 + ... + 17037504.

It is an arithmetic number, because the mean of its divisors is an integer number (34075004).

Almost surely, 2^102225009 is an apocalyptic number.

It is an amenable number.

102225009 is a deficient number, since it is larger than the sum of its proper divisors (34075007).

102225009 is an equidigital number, since it uses as much as digits as its factorization.

102225009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34075006.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 102225009 is about 10110.6384071432. The cubic root of 102225009 is about 467.5761878367.

The spelling of 102225009 in words is "one hundred two million, two hundred twenty-five thousand, nine".