878425385 has 16 divisors (see below), whose sum is σ = 1110322560. Its totient is φ = 665314560.

The previous prime is 878425363. The next prime is 878425397. The reversal of 878425385 is 583524878.

It is a happy number.

It is not a de Polignac number, because 878425385 - 2¹⁸ = 878163241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263489 + ... + 266801.

It is an arithmetic number, because the mean of its divisors is an integer number (69395160).

Almost surely, 2^878425385 is an apocalyptic number.

It is an amenable number.

878425385 is a deficient number, since it is larger than the sum of its proper divisors (231897175).

878425385 is a wasteful number, since it uses less digits than its factorization.

878425385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128.

The product of its digits is 2150400, while the sum is 50.

The square root of 878425385 is about 29638.2419350406. The cubic root of 878425385 is about 957.7120664110.

The spelling of 878425385 in words is "eight hundred seventy-eight million, four hundred twenty-five thousand, three hundred eighty-five".