225994989587 has 2 divisors, whose sum is σ = 225994989588.
Its totient is φ = 225994989586.
The previous prime is 225994989581. The next prime is 225994989707. The reversal of 225994989587 is 785989499522.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 225994989587 - 28 = 225994989331 is a prime.
It is not a weakly prime, because it can be changed into another prime (225994989581) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112997494793 + 112997494794.
It is an arithmetic number, because the mean of its divisors is an integer number (112997494794).
Almost surely, 2225994989587 is an apocalyptic number.
225994989587 is a deficient number, since it is larger than the sum of its proper divisors (1).
225994989587 is an equidigital number, since it uses as much as digits as its factorization.
225994989587 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1175731200, while the sum is 77.
The spelling of 225994989587 in words is "two hundred twenty-five billion, nine hundred ninety-four million, nine hundred eighty-nine thousand, five hundred eighty-seven".