74425247 has 8 divisors (see below), whose sum is σ = 80235120. Its totient is φ = 68627520.

The previous prime is 74425243. The next prime is 74425259. The reversal of 74425247 is 74252447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74425247 - 2² = 74425243 is a prime.

It is a super-2 number, since 2×74425247² = 11078234782022018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74425243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12779 + ... + 17667.

It is an arithmetic number, because the mean of its divisors is an integer number (10029390).

Almost surely, 2^74425247 is an apocalyptic number.

74425247 is a deficient number, since it is larger than the sum of its proper divisors (5809873).

74425247 is a wasteful number, since it uses less digits than its factorization.

74425247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6073.

The product of its digits is 62720, while the sum is 35.

The square root of 74425247 is about 8627.0068389911. The cubic root of 74425247 is about 420.6363125027.

The spelling of 74425247 in words is "seventy-four million, four hundred twenty-five thousand, two hundred forty-seven".