378881825 has 12 divisors (see below), whose sum is σ = 536929920. Its totient is φ = 259804560.

The previous prime is 378881809. The next prime is 378881827. The reversal of 378881825 is 528188873.

It is not a de Polignac number, because 378881825 - 2⁴ = 378881809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378881827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1082345 + ... + 1082694.

It is an arithmetic number, because the mean of its divisors is an integer number (44744160).

Almost surely, 2^378881825 is an apocalyptic number.

378881825 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

378881825 is a deficient number, since it is larger than the sum of its proper divisors (158048095).

378881825 is a wasteful number, since it uses less digits than its factorization.

378881825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165056 (or 2165051 counting only the distinct ones).

The product of its digits is 860160, while the sum is 50.

The square root of 378881825 is about 19464.8869762966. The cubic root of 378881825 is about 723.6044975434.

The spelling of 378881825 in words is "three hundred seventy-eight million, eight hundred eighty-one thousand, eight hundred twenty-five".