249425378 has 16 divisors (see below), whose sum is σ = 380281560. Its totient is φ = 122674176.

The previous prime is 249425347. The next prime is 249425383. The reversal of 249425378 is 873524942.

249425378 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 244703449 + 4721929 = 15643^2 + 2173^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57626 + ... + 61802.

Almost surely, 2^249425378 is an apocalyptic number.

249425378 is a deficient number, since it is larger than the sum of its proper divisors (130856182).

249425378 is a wasteful number, since it uses less digits than its factorization.

249425378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661.

The product of its digits is 483840, while the sum is 44.

The square root of 249425378 is about 15793.2067041497. The cubic root of 249425378 is about 629.4775024487.

It can be divided in two parts, 2494 and 25378, that added together give a palindrome (27872).

The spelling of 249425378 in words is "two hundred forty-nine million, four hundred twenty-five thousand, three hundred seventy-eight".