74387825 has 6 divisors (see below), whose sum is σ = 92240934. Its totient is φ = 59510240.

The previous prime is 74387809. The next prime is 74387843. The reversal of 74387825 is 52878347.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4765489 + 69622336 = 2183^2 + 8344^2 .

It is not a de Polignac number, because 74387825 - 2⁴ = 74387809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 1487732 + ... + 1487781.

It is an arithmetic number, because the mean of its divisors is an integer number (15373489).

Almost surely, 2^74387825 is an apocalyptic number.

It is an amenable number.

74387825 is a deficient number, since it is larger than the sum of its proper divisors (17853109).

74387825 is a wasteful number, since it uses less digits than its factorization.

74387825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975523 (or 2975518 counting only the distinct ones).

The product of its digits is 376320, while the sum is 44.

The square root of 74387825 is about 8624.8376796320. The cubic root of 74387825 is about 420.5658001800.

The spelling of 74387825 in words is "seventy-four million, three hundred eighty-seven thousand, eight hundred twenty-five".