67420625 has 10 divisors (see below), whose sum is σ = 84249594. Its totient is φ = 53936000.

The previous prime is 67420571. The next prime is 67420627. The reversal of 67420625 is 52602476.

It can be written as a sum of positive squares in 5 ways, for example, as 7311616 + 60109009 = 2704^2 + 7753^2 .

It is a de Polignac number, because none of the positive numbers 2^k-67420625 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67420591 and 67420600.

It is not an unprimeable number, because it can be changed into a prime (67420627) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 53312 + ... + 54561.

Almost surely, 2^67420625 is an apocalyptic number.

It is an amenable number.

67420625 is a deficient number, since it is larger than the sum of its proper divisors (16828969).

67420625 is an equidigital number, since it uses as much as digits as its factorization.

67420625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107893 (or 107878 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 67420625 is about 8211.0063329655. The cubic root of 67420625 is about 407.0029821875.

The spelling of 67420625 in words is "sixty-seven million, four hundred twenty thousand, six hundred twenty-five".