74425213 has 4 divisors (see below), whose sum is σ = 74522268. Its totient is φ = 74328160.

The previous prime is 74425207. The next prime is 74425237. The reversal of 74425213 is 31252447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16999129 + 57426084 = 4123^2 + 7578^2 .

It is a cyclic number.

It is not a de Polignac number, because 74425213 - 2⁵ = 74425181 is a prime.

It is a super-2 number, since 2×74425213² = 11078224660190738, 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 3 ways as a sum of consecutive naturals, for example, 47368 + ... + 48913.

It is an arithmetic number, because the mean of its divisors is an integer number (18630567).

Almost surely, 2^74425213 is an apocalyptic number.

It is an amenable number.

74425213 is a deficient number, since it is larger than the sum of its proper divisors (97055).

74425213 is an equidigital number, since it uses as much as digits as its factorization.

74425213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97054.

The product of its digits is 6720, while the sum is 28.

The square root of 74425213 is about 8627.0048684349. The cubic root of 74425213 is about 420.6362484490.

The spelling of 74425213 in words is "seventy-four million, four hundred twenty-five thousand, two hundred thirteen".