67824425 has 12 divisors (see below), whose sum is σ = 84214476. Its totient is φ = 54187200.

The previous prime is 67824409. The next prime is 67824443. The reversal of 67824425 is 52442876.

It can be written as a sum of positive squares in 6 ways, for example, as 633616 + 67190809 = 796^2 + 8197^2 .

It is not a de Polignac number, because 67824425 - 2⁴ = 67824409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25247 + ... + 27803.

It is an arithmetic number, because the mean of its divisors is an integer number (7017873).

Almost surely, 2^67824425 is an apocalyptic number.

It is an amenable number.

67824425 is a deficient number, since it is larger than the sum of its proper divisors (16390051).

67824425 is a wasteful number, since it uses less digits than its factorization.

67824425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628 (or 3623 counting only the distinct ones).

The product of its digits is 107520, while the sum is 38.

The square root of 67824425 is about 8235.5585724345. The cubic root of 67824425 is about 407.8139149650.

The spelling of 67824425 in words is "sixty-seven million, eight hundred twenty-four thousand, four hundred twenty-five".