378907225 has 6 divisors (see below), whose sum is σ = 469844990. Its totient is φ = 303125760.

The previous prime is 378907211. The next prime is 378907241. The reversal of 378907225 is 522709873.

It can be written as a sum of positive squares in 3 ways, for example, as 25918281 + 352988944 = 5091^2 + 18788^2 .

It is not a de Polignac number, because 378907225 - 2⁹ = 378906713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7578120 + ... + 7578169.

Almost surely, 2^378907225 is an apocalyptic number.

It is an amenable number.

378907225 is a deficient number, since it is larger than the sum of its proper divisors (90937765).

378907225 is a wasteful number, since it uses less digits than its factorization.

378907225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15156299 (or 15156294 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 378907225 is about 19465.5394222713. The cubic root of 378907225 is about 723.6206671793.

The spelling of 378907225 in words is "three hundred seventy-eight million, nine hundred seven thousand, two hundred twenty-five".