378381528225 has 96 divisors (see below), whose sum is σ = 731966246400. Its totient is φ = 191108808000.

The previous prime is 378381528199. The next prime is 378381528227. The reversal of 378381528225 is 522825183873.

378381528225 is a `hidden beast` number, since 37 + 8 + 3 + 81 + 528 + 2 + 2 + 5 = 666.

It is not a de Polignac number, because 378381528225 - 2¹⁷ = 378381397153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378381528227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51950434 + ... + 51957716.

It is an arithmetic number, because the mean of its divisors is an integer number (7624648400).

Almost surely, 2^378381528225 is an apocalyptic number.

It is an amenable number.

378381528225 is a deficient number, since it is larger than the sum of its proper divisors (353584718175).

378381528225 is a wasteful number, since it uses less digits than its factorization.

378381528225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11372 (or 11361 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 378381528225 in words is "three hundred seventy-eight billion, three hundred eighty-one million, five hundred twenty-eight thousand, two hundred twenty-five".