1200825399 has 16 divisors (see below), whose sum is σ = 1653672672. Its totient is φ = 774678528.

The previous prime is 1200825361. The next prime is 1200825433. The reversal of 1200825399 is 9935280021.

It is not a de Polignac number, because 1200825399 - 2¹⁵ = 1200792631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200825319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40122 + ... + 63335.

It is an arithmetic number, because the mean of its divisors is an integer number (103354542).

Almost surely, 2^1200825399 is an apocalyptic number.

1200825399 is a deficient number, since it is larger than the sum of its proper divisors (452847273).

1200825399 is a wasteful number, since it uses less digits than its factorization.

1200825399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103586.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1200825399 is about 34652.9277118110. The cubic root of 1200825399 is about 1062.9021570420.

The spelling of 1200825399 in words is "one billion, two hundred million, eight hundred twenty-five thousand, three hundred ninety-nine".