74142225 has 36 divisors (see below), whose sum is σ = 138580416. Its totient is φ = 37820640.

The previous prime is 74142223. The next prime is 74142239. The reversal of 74142225 is 52224147.

It is not a de Polignac number, because 74142225 - 2¹ = 74142223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74142221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1989 + ... + 12338.

It is an arithmetic number, because the mean of its divisors is an integer number (3849456).

Almost surely, 2^74142225 is an apocalyptic number.

74142225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

74142225 is a deficient number, since it is larger than the sum of its proper divisors (64438191).

74142225 is a wasteful number, since it uses less digits than its factorization.

74142225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14366 (or 14358 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 74142225 is about 8610.5879590188. The cubic root of 74142225 is about 420.1024409983.

The spelling of 74142225 in words is "seventy-four million, one hundred forty-two thousand, two hundred twenty-five".