1250000001389 has 8 divisors (see below), whose sum is σ = 1261500240000. Its totient is φ = 1238500351152.

The previous prime is 1250000001379. The next prime is 1250000001391. The reversal of 1250000001389 is 9831000000521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1250000001389 - 2¹² = 1249999997293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250000001319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4920512 + ... + 5168310.

It is an arithmetic number, because the mean of its divisors is an integer number (157687530000).

Almost surely, 2^{1250000001389} is an apocalyptic number.

It is an amenable number.

1250000001389 is a deficient number, since it is larger than the sum of its proper divisors (11500238611).

1250000001389 is a wasteful number, since it uses less digits than its factorization.

1250000001389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294187.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 1250000001389 in words is "one trillion, two hundred fifty billion, one thousand, three hundred eighty-nine".