425216287 has 2 divisors, whose sum is σ = 425216288. Its totient is φ = 425216286.

The previous prime is 425216263. The next prime is 425216327. The reversal of 425216287 is 782612524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425216287 - 2²⁷ = 290998559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425216227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212608143 + 212608144.

It is an arithmetic number, because the mean of its divisors is an integer number (212608144).

Almost surely, 2^425216287 is an apocalyptic number.

425216287 is a deficient number, since it is larger than the sum of its proper divisors (1).

425216287 is an equidigital number, since it uses as much as digits as its factorization.

425216287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 37.

The square root of 425216287 is about 20620.7731911294. The cubic root of 425216287 is about 751.9748174899.

It can be divided in two parts, 425216 and 287, that added together give a triangular number (425503 = T₉₂₂).

The spelling of 425216287 in words is "four hundred twenty-five million, two hundred sixteen thousand, two hundred eighty-seven".