1389865225 has 24 divisors (see below), whose sum is σ = 2022880448. Its totient is φ = 927288000.

The previous prime is 1389865201. The next prime is 1389865241. The reversal of 1389865225 is 5225689831.

It is a happy number.

It is not a de Polignac number, because 1389865225 - 2¹⁷ = 1389734153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100851 + ... + 113800.

Almost surely, 2^1389865225 is an apocalyptic number.

It is an amenable number.

1389865225 is a deficient number, since it is larger than the sum of its proper divisors (633015223).

1389865225 is a wasteful number, since it uses less digits than its factorization.

1389865225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214705 (or 214700 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 49.

The square root of 1389865225 is about 37280.8962472739. The cubic root of 1389865225 is about 1115.9829588594.

The spelling of 1389865225 in words is "one billion, three hundred eighty-nine million, eight hundred sixty-five thousand, two hundred twenty-five".