1289343425 has 12 divisors (see below), whose sum is σ = 1599283056. Its totient is φ = 1031154000.

The previous prime is 1289343383. The next prime is 1289343431. The reversal of 1289343425 is 5243439821.

It is not a de Polignac number, because 1289343425 - 2²⁰ = 1288294849 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105482 + ... + 117068.

It is an arithmetic number, because the mean of its divisors is an integer number (133273588).

Almost surely, 2^1289343425 is an apocalyptic number.

It is an amenable number.

1289343425 is a deficient number, since it is larger than the sum of its proper divisors (309939631).

1289343425 is a wasteful number, since it uses less digits than its factorization.

1289343425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16048 (or 16043 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 1289343425 is about 35907.4285489786. The cubic root of 1289343425 is about 1088.4025149883.

The spelling of 1289343425 in words is "one billion, two hundred eighty-nine million, three hundred forty-three thousand, four hundred twenty-five".