378025555 has 4 divisors (see below), whose sum is σ = 453630672. Its totient is φ = 302420440.

The previous prime is 378025547. The next prime is 378025561. The reversal of 378025555 is 555520873.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 378025555 - 2³ = 378025547 is a prime.

It is a super-3 number, since 3×378025555³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37802551 + ... + 37802560.

It is an arithmetic number, because the mean of its divisors is an integer number (113407668).

Almost surely, 2^378025555 is an apocalyptic number.

378025555 is a deficient number, since it is larger than the sum of its proper divisors (75605117).

378025555 is an equidigital number, since it uses as much as digits as its factorization.

378025555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75605116.

The product of its (nonzero) digits is 210000, while the sum is 40.

The square root of 378025555 is about 19442.8792878010. The cubic root of 378025555 is about 723.0589728498.

The spelling of 378025555 in words is "three hundred seventy-eight million, twenty-five thousand, five hundred fifty-five".