1289264325 has 24 divisors (see below), whose sum is σ = 2142767616. Its totient is φ = 684000000.

The previous prime is 1289264321. The next prime is 1289264329. The reversal of 1289264325 is 5234629821.

It is an interprime number because it is at equal distance from previous prime (1289264321) and next prime (1289264329).

It is not a de Polignac number, because 1289264325 - 2² = 1289264321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289264321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30676 + ... + 59325.

It is an arithmetic number, because the mean of its divisors is an integer number (89281984).

Almost surely, 2^1289264325 is an apocalyptic number.

1289264325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1289264325 is a deficient number, since it is larger than the sum of its proper divisors (853503291).

1289264325 is a wasteful number, since it uses less digits than its factorization.

1289264325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90205 (or 90200 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 1289264325 is about 35906.3270886901. The cubic root of 1289264325 is about 1088.3802570448.

The spelling of 1289264325 in words is "one billion, two hundred eighty-nine million, two hundred sixty-four thousand, three hundred twenty-five".