128825227 has 2 divisors, whose sum is σ = 128825228. Its totient is φ = 128825226.

The previous prime is 128825183. The next prime is 128825273. The reversal of 128825227 is 722528821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128825227 is a prime.

It is a super-2 number, since 2×128825227² = 33191878223203058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128825287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64412613 + 64412614.

It is an arithmetic number, because the mean of its divisors is an integer number (64412614).

Almost surely, 2^128825227 is an apocalyptic number.

128825227 is a deficient number, since it is larger than the sum of its proper divisors (1).

128825227 is an equidigital number, since it uses as much as digits as its factorization.

128825227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 37.

The square root of 128825227 is about 11350.1201315228. The cubic root of 128825227 is about 505.0491433403.

The spelling of 128825227 in words is "one hundred twenty-eight million, eight hundred twenty-five thousand, two hundred twenty-seven".