67788025 has 6 divisors (see below), whose sum is σ = 84057182. Its totient is φ = 54230400.

The previous prime is 67788023. The next prime is 67788037. The reversal of 67788025 is 52088776.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 22201 + 67765824 = 149^2 + 8232^2 .

It is not a de Polignac number, because 67788025 - 2¹ = 67788023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67788023) 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 in 5 ways as a sum of consecutive naturals, for example, 1355736 + ... + 1355785.

Almost surely, 2^67788025 is an apocalyptic number.

It is an amenable number.

67788025 is a deficient number, since it is larger than the sum of its proper divisors (16269157).

67788025 is a wasteful number, since it uses less digits than its factorization.

67788025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711531 (or 2711526 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 67788025 is about 8233.3483468149. The cubic root of 67788025 is about 407.7409467442.

The spelling of 67788025 in words is "sixty-seven million, seven hundred eighty-eight thousand, twenty-five".