225555587 has 2 divisors, whose sum is σ = 225555588. Its totient is φ = 225555586.

The previous prime is 225555581. The next prime is 225555607. The reversal of 225555587 is 785555522.

225555587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225555587 - 2²⁰ = 224507011 is a prime.

It is not a weakly prime, because it can be changed into another prime (225555581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112777793 + 112777794.

It is an arithmetic number, because the mean of its divisors is an integer number (112777794).

Almost surely, 2^225555587 is an apocalyptic number.

225555587 is a deficient number, since it is larger than the sum of its proper divisors (1).

225555587 is an equidigital number, since it uses as much as digits as its factorization.

225555587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 700000, while the sum is 44.

The square root of 225555587 is about 15018.5081482816. The cubic root of 225555587 is about 608.7204091549.

The spelling of 225555587 in words is "two hundred twenty-five million, five hundred fifty-five thousand, five hundred eighty-seven".