780825383 has 4 divisors (see below), whose sum is σ = 840888888. Its totient is φ = 720761880.

The previous prime is 780825343. The next prime is 780825439. The reversal of 780825383 is 383528087.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 780825383 - 2¹² = 780821287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780825313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30031733 + ... + 30031758.

It is an arithmetic number, because the mean of its divisors is an integer number (210222222).

Almost surely, 2^780825383 is an apocalyptic number.

780825383 is a deficient number, since it is larger than the sum of its proper divisors (60063505).

780825383 is a wasteful number, since it uses less digits than its factorization.

780825383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60063504.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 780825383 is about 27943.2529065605. The cubic root of 780825383 is about 920.8409854982.

The spelling of 780825383 in words is "seven hundred eighty million, eight hundred twenty-five thousand, three hundred eighty-three".