378625685 has 4 divisors (see below), whose sum is σ = 454350828. Its totient is φ = 302900544.

The previous prime is 378625651. The next prime is 378625697. The reversal of 378625685 is 586526873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586526873 = 3499 ⋅167627.

It can be written as a sum of positive squares in 2 ways, for example, as 41499364 + 337126321 = 6442^2 + 18361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378625685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37862564 + ... + 37862573.

It is an arithmetic number, because the mean of its divisors is an integer number (113587707).

Almost surely, 2^378625685 is an apocalyptic number.

It is an amenable number.

378625685 is a deficient number, since it is larger than the sum of its proper divisors (75725143).

378625685 is an equidigital number, since it uses as much as digits as its factorization.

378625685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75725142.

The product of its digits is 2419200, while the sum is 50.

The square root of 378625685 is about 19458.3063240355. The cubic root of 378625685 is about 723.4413984570.

The spelling of 378625685 in words is "three hundred seventy-eight million, six hundred twenty-five thousand, six hundred eighty-five".