67617225 has 36 divisors (see below), whose sum is σ = 130431756. Its totient is φ = 33287040.

The previous prime is 67617203. The next prime is 67617227. The reversal of 67617225 is 52271676.

It can be written as a sum of positive squares in 6 ways, for example, as 29127609 + 38489616 = 5397^2 + 6204^2 .

It is not a de Polignac number, because 67617225 - 2¹⁰ = 67616201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67617225.

It is not an unprimeable number, because it can be changed into a prime (67617227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8634 + ... + 14483.

Almost surely, 2^67617225 is an apocalyptic number.

67617225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67617225 is a deficient number, since it is larger than the sum of its proper divisors (62814531).

67617225 is a wasteful number, since it uses less digits than its factorization.

67617225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23146 (or 23138 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 67617225 is about 8222.9693541932. The cubic root of 67617225 is about 407.3982081052.

The spelling of 67617225 in words is "sixty-seven million, six hundred seventeen thousand, two hundred twenty-five".