2170969225 has 6 divisors (see below), whose sum is σ = 2692001870. Its totient is φ = 1736775360.

The previous prime is 2170969223. The next prime is 2170969243. The reversal of 2170969225 is 5229690712.

It can be written as a sum of positive squares in 3 ways, for example, as 548168569 + 1622800656 = 23413^2 + 40284^2 .

It is not a de Polignac number, because 2170969225 - 2¹ = 2170969223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2170969223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43419360 + ... + 43419409.

Almost surely, 2^2170969225 is an apocalyptic number.

2170969225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2170969225 is a deficient number, since it is larger than the sum of its proper divisors (521032645).

2170969225 is an equidigital number, since it uses as much as digits as its factorization.

2170969225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86838779 (or 86838774 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 2170969225 is about 46593.6607812694. The cubic root of 2170969225 is about 1294.8453127896.

The spelling of 2170969225 in words is "two billion, one hundred seventy million, nine hundred sixty-nine thousand, two hundred twenty-five".