378438025 has 18 divisors (see below), whose sum is σ = 545879310. Its totient is φ = 259499520.

The previous prime is 378438013. The next prime is 378438061. The reversal of 378438025 is 520834873.

It can be written as a sum of positive squares in 3 ways, for example, as 95491984 + 282946041 = 9772^2 + 16821^2 .

It is not a de Polignac number, because 378438025 - 2⁵ = 378437993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 153240 + ... + 155689.

Almost surely, 2^378438025 is an apocalyptic number.

378438025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

378438025 is a deficient number, since it is larger than the sum of its proper divisors (167441285).

378438025 is a wasteful number, since it uses less digits than its factorization.

378438025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308953 (or 308941 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 378438025 is about 19453.4836211924. The cubic root of 378438025 is about 723.3218578362.

The spelling of 378438025 in words is "three hundred seventy-eight million, four hundred thirty-eight thousand, twenty-five".