74378225 has 6 divisors (see below), whose sum is σ = 92229030. Its totient is φ = 59502560.

The previous prime is 74378191. The next prime is 74378237. The reversal of 74378225 is 52287347.

It can be written as a sum of positive squares in 3 ways, for example, as 23512801 + 50865424 = 4849^2 + 7132^2 .

It is a de Polignac number, because none of the positive numbers 2^k-74378225 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1487540 + ... + 1487589.

It is an arithmetic number, because the mean of its divisors is an integer number (15371505).

Almost surely, 2^74378225 is an apocalyptic number.

It is an amenable number.

74378225 is a deficient number, since it is larger than the sum of its proper divisors (17850805).

74378225 is a wasteful number, since it uses less digits than its factorization.

74378225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975139 (or 2975134 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 74378225 is about 8624.2811294623. The cubic root of 74378225 is about 420.5477075895.

The spelling of 74378225 in words is "seventy-four million, three hundred seventy-eight thousand, two hundred twenty-five".