74225947 has 2 divisors, whose sum is σ = 74225948. Its totient is φ = 74225946.

The previous prime is 74225941. The next prime is 74226001. The reversal of 74225947 is 74952247.

It is a weak prime.

It is an emirp because it is prime and its reverse (74952247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74225947 - 2³ = 74225939 is a prime.

It is not a weakly prime, because it can be changed into another prime (74225941) by changing a digit.

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 as a sum of consecutive naturals, namely, 37112973 + 37112974.

It is an arithmetic number, because the mean of its divisors is an integer number (37112974).

Almost surely, 2^74225947 is an apocalyptic number.

74225947 is a deficient number, since it is larger than the sum of its proper divisors (1).

74225947 is an equidigital number, since it uses as much as digits as its factorization.

74225947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 74225947 is about 8615.4481601365. The cubic root of 74225947 is about 420.2605092070.

The spelling of 74225947 in words is "seventy-four million, two hundred twenty-five thousand, nine hundred forty-seven".