67625429 has 2 divisors, whose sum is σ = 67625430. Its totient is φ = 67625428.

The previous prime is 67625417. The next prime is 67625431. The reversal of 67625429 is 92452676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45252529 + 22372900 = 6727^2 + 4730^2 .

It is a cyclic number.

It is not a de Polignac number, because 67625429 - 2⁴ = 67625413 is a prime.

Together with 67625431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67625479) 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, 33812714 + 33812715.

It is an arithmetic number, because the mean of its divisors is an integer number (33812715).

Almost surely, 2^67625429 is an apocalyptic number.

It is an amenable number.

67625429 is a deficient number, since it is larger than the sum of its proper divisors (1).

67625429 is an equidigital number, since it uses as much as digits as its factorization.

67625429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 67625429 is about 8223.4681856258. The cubic root of 67625429 is about 407.4146839846.

The spelling of 67625429 in words is "sixty-seven million, six hundred twenty-five thousand, four hundred twenty-nine".