853225187 has 2 divisors, whose sum is σ = 853225188. Its totient is φ = 853225186.

The previous prime is 853225157. The next prime is 853225199. The reversal of 853225187 is 781522358.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-853225187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (853225157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426612593 + 426612594.

It is an arithmetic number, because the mean of its divisors is an integer number (426612594).

Almost surely, 2^853225187 is an apocalyptic number.

853225187 is a deficient number, since it is larger than the sum of its proper divisors (1).

853225187 is an equidigital number, since it uses as much as digits as its factorization.

853225187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 41.

The square root of 853225187 is about 29210.0186066356. The cubic root of 853225187 is about 948.4648102369.

It can be divided in two parts, 85322 and 5187, that added together give a palindrome (90509).

The spelling of 853225187 in words is "eight hundred fifty-three million, two hundred twenty-five thousand, one hundred eighty-seven".