220725887 has 2 divisors, whose sum is σ = 220725888. Its totient is φ = 220725886.

The previous prime is 220725863. The next prime is 220725929. The reversal of 220725887 is 788527022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220725887 - 2⁶ = 220725823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220725847) 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 as a sum of consecutive naturals, namely, 110362943 + 110362944.

It is an arithmetic number, because the mean of its divisors is an integer number (110362944).

Almost surely, 2^220725887 is an apocalyptic number.

220725887 is a deficient number, since it is larger than the sum of its proper divisors (1).

220725887 is an equidigital number, since it uses as much as digits as its factorization.

220725887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 220725887 is about 14856.8464688843. The cubic root of 220725887 is about 604.3442906122.

The spelling of 220725887 in words is "two hundred twenty million, seven hundred twenty-five thousand, eight hundred eighty-seven".