285925018649 has 2 divisors, whose sum is σ = 285925018650. Its totient is φ = 285925018648.

The previous prime is 285925018637. The next prime is 285925018723. The reversal of 285925018649 is 946810529582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198699303049 + 87225715600 = 445757^2 + 295340^2 .

It is a cyclic number.

It is not a de Polignac number, because 285925018649 - 2⁴ = 285925018633 is a prime.

It is not a weakly prime, because it can be changed into another prime (285925018609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142962509324 + 142962509325.

It is an arithmetic number, because the mean of its divisors is an integer number (142962509325).

Almost surely, 2^285925018649 is an apocalyptic number.

It is an amenable number.

285925018649 is a deficient number, since it is larger than the sum of its proper divisors (1).

285925018649 is an equidigital number, since it uses as much as digits as its factorization.

285925018649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12441600, while the sum is 59.

The spelling of 285925018649 in words is "two hundred eighty-five billion, nine hundred twenty-five million, eighteen thousand, six hundred forty-nine".